diff --git a/data/nextstrain/flu/h1n1pdm/ha/CY121680/pathogen.json b/data/nextstrain/flu/h1n1pdm/ha/CY121680/pathogen.json
index 8116c5e6..d1dbd5be 100644
--- a/data/nextstrain/flu/h1n1pdm/ha/CY121680/pathogen.json
+++ b/data/nextstrain/flu/h1n1pdm/ha/CY121680/pathogen.json
@@ -117,7 +117,6 @@
     "reference name": "A/California/7/2009-egg"
   },
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h1n1pdm/ha/MW626062/pathogen.json b/data/nextstrain/flu/h1n1pdm/ha/MW626062/pathogen.json
index 9c7ea7d2..866143e7 100644
--- a/data/nextstrain/flu/h1n1pdm/ha/MW626062/pathogen.json
+++ b/data/nextstrain/flu/h1n1pdm/ha/MW626062/pathogen.json
@@ -119,7 +119,6 @@
     "reference name": "A/Wisconsin/588/2019"
   },
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h1n1pdm/mp/pathogen.json b/data/nextstrain/flu/h1n1pdm/mp/pathogen.json
index decfadb6..86b75c34 100644
--- a/data/nextstrain/flu/h1n1pdm/mp/pathogen.json
+++ b/data/nextstrain/flu/h1n1pdm/mp/pathogen.json
@@ -72,7 +72,6 @@
   },
   "defaultCds": "M2",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h1n1pdm/na/MW626056/pathogen.json b/data/nextstrain/flu/h1n1pdm/na/MW626056/pathogen.json
index ba9d2dbd..6342216a 100644
--- a/data/nextstrain/flu/h1n1pdm/na/MW626056/pathogen.json
+++ b/data/nextstrain/flu/h1n1pdm/na/MW626056/pathogen.json
@@ -113,7 +113,6 @@
     "reference name": "A/Wisconsin/588/2019"
   },
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h1n1pdm/np/pathogen.json b/data/nextstrain/flu/h1n1pdm/np/pathogen.json
index 3acac207..f41fb8c3 100644
--- a/data/nextstrain/flu/h1n1pdm/np/pathogen.json
+++ b/data/nextstrain/flu/h1n1pdm/np/pathogen.json
@@ -72,7 +72,6 @@
   },
   "defaultCds": "NP",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h1n1pdm/ns/pathogen.json b/data/nextstrain/flu/h1n1pdm/ns/pathogen.json
index 97a8642b..3095dbba 100644
--- a/data/nextstrain/flu/h1n1pdm/ns/pathogen.json
+++ b/data/nextstrain/flu/h1n1pdm/ns/pathogen.json
@@ -72,7 +72,6 @@
   },
   "defaultCds": "NS1",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h1n1pdm/pa/pathogen.json b/data/nextstrain/flu/h1n1pdm/pa/pathogen.json
index 98bd6355..139bd304 100644
--- a/data/nextstrain/flu/h1n1pdm/pa/pathogen.json
+++ b/data/nextstrain/flu/h1n1pdm/pa/pathogen.json
@@ -72,7 +72,6 @@
   },
   "defaultCds": "PA",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h1n1pdm/pb1/pathogen.json b/data/nextstrain/flu/h1n1pdm/pb1/pathogen.json
index b8aeace6..82d5862b 100644
--- a/data/nextstrain/flu/h1n1pdm/pb1/pathogen.json
+++ b/data/nextstrain/flu/h1n1pdm/pb1/pathogen.json
@@ -72,7 +72,6 @@
   },
   "defaultCds": "PB1",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h1n1pdm/pb2/pathogen.json b/data/nextstrain/flu/h1n1pdm/pb2/pathogen.json
index 521730ee..32c3f0d5 100644
--- a/data/nextstrain/flu/h1n1pdm/pb2/pathogen.json
+++ b/data/nextstrain/flu/h1n1pdm/pb2/pathogen.json
@@ -72,7 +72,6 @@
   },
   "defaultCds": "PB2",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h3n2/ha/CY163680/pathogen.json b/data/nextstrain/flu/h3n2/ha/CY163680/pathogen.json
index 4f01c9de..94d83be8 100644
--- a/data/nextstrain/flu/h3n2/ha/CY163680/pathogen.json
+++ b/data/nextstrain/flu/h3n2/ha/CY163680/pathogen.json
@@ -117,7 +117,6 @@
     "reference name": "A/Wisconsin/67/2005-egg"
   },
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h3n2/ha/EPI1857216/pathogen.json b/data/nextstrain/flu/h3n2/ha/EPI1857216/pathogen.json
index 58b96903..2e565c4c 100644
--- a/data/nextstrain/flu/h3n2/ha/EPI1857216/pathogen.json
+++ b/data/nextstrain/flu/h3n2/ha/EPI1857216/pathogen.json
@@ -165,7 +165,6 @@
     "reference name": "A/Darwin/6/2021"
   },
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h3n2/mp/pathogen.json b/data/nextstrain/flu/h3n2/mp/pathogen.json
index 8de7843b..c0e878d9 100644
--- a/data/nextstrain/flu/h3n2/mp/pathogen.json
+++ b/data/nextstrain/flu/h3n2/mp/pathogen.json
@@ -72,7 +72,6 @@
   },
   "defaultCds": "M2",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h3n2/na/EPI1857215/pathogen.json b/data/nextstrain/flu/h3n2/na/EPI1857215/pathogen.json
index 165733f4..9c446b74 100644
--- a/data/nextstrain/flu/h3n2/na/EPI1857215/pathogen.json
+++ b/data/nextstrain/flu/h3n2/na/EPI1857215/pathogen.json
@@ -113,7 +113,6 @@
     "reference name": "A/Darwin/6/2021"
   },
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h3n2/np/pathogen.json b/data/nextstrain/flu/h3n2/np/pathogen.json
index 6ab72ba7..7f49f04b 100644
--- a/data/nextstrain/flu/h3n2/np/pathogen.json
+++ b/data/nextstrain/flu/h3n2/np/pathogen.json
@@ -72,7 +72,6 @@
   },
   "defaultCds": "NP",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h3n2/ns/pathogen.json b/data/nextstrain/flu/h3n2/ns/pathogen.json
index eba1e59f..21d68c29 100644
--- a/data/nextstrain/flu/h3n2/ns/pathogen.json
+++ b/data/nextstrain/flu/h3n2/ns/pathogen.json
@@ -72,7 +72,6 @@
   },
   "defaultCds": "NS1",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h3n2/pa/pathogen.json b/data/nextstrain/flu/h3n2/pa/pathogen.json
index 44e9df8d..1a22a979 100644
--- a/data/nextstrain/flu/h3n2/pa/pathogen.json
+++ b/data/nextstrain/flu/h3n2/pa/pathogen.json
@@ -72,7 +72,6 @@
   },
   "defaultCds": "PA",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h3n2/pb1/pathogen.json b/data/nextstrain/flu/h3n2/pb1/pathogen.json
index 41163004..f8e65f64 100644
--- a/data/nextstrain/flu/h3n2/pb1/pathogen.json
+++ b/data/nextstrain/flu/h3n2/pb1/pathogen.json
@@ -72,7 +72,6 @@
   },
   "defaultCds": "PB1",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/h3n2/pb2/pathogen.json b/data/nextstrain/flu/h3n2/pb2/pathogen.json
index 33077f13..a3dd1573 100644
--- a/data/nextstrain/flu/h3n2/pb2/pathogen.json
+++ b/data/nextstrain/flu/h3n2/pb2/pathogen.json
@@ -72,7 +72,6 @@
   },
   "defaultCds": "PB2",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/vic/ha/KX058884/pathogen.json b/data/nextstrain/flu/vic/ha/KX058884/pathogen.json
index 557b14fd..fda51f22 100644
--- a/data/nextstrain/flu/vic/ha/KX058884/pathogen.json
+++ b/data/nextstrain/flu/vic/ha/KX058884/pathogen.json
@@ -119,7 +119,6 @@
     "reference name": "B/Brisbane/60/2008-egg"
   },
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/vic/na/CY073894/pathogen.json b/data/nextstrain/flu/vic/na/CY073894/pathogen.json
index 263a2460..316ffcfc 100644
--- a/data/nextstrain/flu/vic/na/CY073894/pathogen.json
+++ b/data/nextstrain/flu/vic/na/CY073894/pathogen.json
@@ -113,7 +113,6 @@
     "reference name": "B/Brisbane/60/2008"
   },
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/flu/yam/ha/JN993010/pathogen.json b/data/nextstrain/flu/yam/ha/JN993010/pathogen.json
index b4a835dc..95c3975f 100644
--- a/data/nextstrain/flu/yam/ha/JN993010/pathogen.json
+++ b/data/nextstrain/flu/yam/ha/JN993010/pathogen.json
@@ -113,7 +113,6 @@
     "reference name": "B/Wisconsin/01/2010"
   },
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/mpox/all-clades/pathogen.json b/data/nextstrain/mpox/all-clades/pathogen.json
index c5b2be3b..79ca773d 100644
--- a/data/nextstrain/mpox/all-clades/pathogen.json
+++ b/data/nextstrain/mpox/all-clades/pathogen.json
@@ -211,7 +211,6 @@
     "nextstrain/mpox"
   ],
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/mpox/clade-iib/pathogen.json b/data/nextstrain/mpox/clade-iib/pathogen.json
index 574d5a2e..2386be6e 100644
--- a/data/nextstrain/mpox/clade-iib/pathogen.json
+++ b/data/nextstrain/mpox/clade-iib/pathogen.json
@@ -90,7 +90,6 @@
     "hMPXV"
   ],
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/mpox/lineage-b.1/pathogen.json b/data/nextstrain/mpox/lineage-b.1/pathogen.json
index e0234a71..26c0f24d 100644
--- a/data/nextstrain/mpox/lineage-b.1/pathogen.json
+++ b/data/nextstrain/mpox/lineage-b.1/pathogen.json
@@ -282,7 +282,6 @@
     "hMPXV_B1"
   ],
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/rsv/a/EPI_ISL_412866/pathogen.json b/data/nextstrain/rsv/a/EPI_ISL_412866/pathogen.json
index f7ebfbea..250ce012 100644
--- a/data/nextstrain/rsv/a/EPI_ISL_412866/pathogen.json
+++ b/data/nextstrain/rsv/a/EPI_ISL_412866/pathogen.json
@@ -90,7 +90,6 @@
     "reference name": "hRSV/A/England/397/2017"
   },
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/rsv/b/EPI_ISL_1653999/pathogen.json b/data/nextstrain/rsv/b/EPI_ISL_1653999/pathogen.json
index d1bffd19..29dc7060 100644
--- a/data/nextstrain/rsv/b/EPI_ISL_1653999/pathogen.json
+++ b/data/nextstrain/rsv/b/EPI_ISL_1653999/pathogen.json
@@ -90,7 +90,6 @@
     "reference name": "hRSV/B/Australia/VIC-RCH056/2019"
   },
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   }
 }
diff --git a/data/nextstrain/sars-cov-2/BA.2.86/pathogen.json b/data/nextstrain/sars-cov-2/BA.2.86/pathogen.json
index 9a2ee6d0..2784af23 100644
--- a/data/nextstrain/sars-cov-2/BA.2.86/pathogen.json
+++ b/data/nextstrain/sars-cov-2/BA.2.86/pathogen.json
@@ -2690,8 +2690,7 @@
   },
   "schemaVersion": "3.0.0",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   },
   "maintenance": {
     "website": [
diff --git a/data/nextstrain/sars-cov-2/BA.2/pathogen.json b/data/nextstrain/sars-cov-2/BA.2/pathogen.json
index d64a7c2b..b012394a 100644
--- a/data/nextstrain/sars-cov-2/BA.2/pathogen.json
+++ b/data/nextstrain/sars-cov-2/BA.2/pathogen.json
@@ -2690,8 +2690,7 @@
   },
   "schemaVersion": "3.0.0",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   },
   "maintenance": {
     "website": [
diff --git a/data/nextstrain/sars-cov-2/XBB/pathogen.json b/data/nextstrain/sars-cov-2/XBB/pathogen.json
index 7fac1c9b..07760a4c 100644
--- a/data/nextstrain/sars-cov-2/XBB/pathogen.json
+++ b/data/nextstrain/sars-cov-2/XBB/pathogen.json
@@ -2690,8 +2690,7 @@
   },
   "schemaVersion": "3.0.0",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   },
   "maintenance": {
     "website": [
diff --git a/data/nextstrain/sars-cov-2/wuhan-hu-1/orfs/pathogen.json b/data/nextstrain/sars-cov-2/wuhan-hu-1/orfs/pathogen.json
index 55a86f62..aa1133dc 100644
--- a/data/nextstrain/sars-cov-2/wuhan-hu-1/orfs/pathogen.json
+++ b/data/nextstrain/sars-cov-2/wuhan-hu-1/orfs/pathogen.json
@@ -2690,8 +2690,7 @@
   },
   "schemaVersion": "3.0.0",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   },
   "maintenance": {
     "website": [
diff --git a/data/nextstrain/sars-cov-2/wuhan-hu-1/proteins/pathogen.json b/data/nextstrain/sars-cov-2/wuhan-hu-1/proteins/pathogen.json
index e4f71078..0ca00890 100644
--- a/data/nextstrain/sars-cov-2/wuhan-hu-1/proteins/pathogen.json
+++ b/data/nextstrain/sars-cov-2/wuhan-hu-1/proteins/pathogen.json
@@ -2690,8 +2690,7 @@
   },
   "schemaVersion": "3.0.0",
   "version": {
-    "updatedAt": "2024-01-16T20:31:02Z",
-    "tag": "2024-01-16--20-31-02Z"
+    "tag": "unreleased"
   },
   "maintenance": {
     "website": [
diff --git a/data_output/index.json b/data_output/index.json
index d5a0a2c4..95c8f395 100644
--- a/data_output/index.json
+++ b/data_output/index.json
@@ -85,8 +85,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -94,8 +93,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -158,8 +156,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -167,8 +164,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -234,8 +230,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -243,8 +238,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -307,8 +301,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -316,8 +309,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -380,8 +372,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -389,8 +380,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -453,8 +443,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -462,8 +451,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -528,8 +516,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -537,8 +524,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -602,8 +588,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -611,8 +596,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -675,8 +659,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -684,8 +667,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -751,8 +733,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -760,8 +741,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -825,8 +805,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -834,8 +813,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -900,8 +878,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -909,8 +886,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -974,8 +950,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -983,8 +958,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1043,8 +1017,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1052,8 +1025,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1113,8 +1085,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1122,8 +1093,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1183,8 +1153,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1192,8 +1161,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1232,8 +1200,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1241,8 +1208,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1281,8 +1247,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1290,8 +1255,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1333,8 +1297,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1342,8 +1305,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1396,8 +1358,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1405,8 +1366,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1459,8 +1419,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1468,8 +1427,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1522,8 +1480,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1531,8 +1488,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1585,8 +1541,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1594,8 +1549,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1648,8 +1602,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1657,8 +1610,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1711,8 +1663,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1720,8 +1671,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1774,8 +1724,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1783,8 +1732,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1837,8 +1785,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1846,8 +1793,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1900,8 +1846,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1909,8 +1854,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -1963,8 +1907,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -1972,8 +1915,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -2026,8 +1968,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -2035,8 +1976,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
@@ -2089,8 +2029,7 @@
           },
           "versions": [
             {
-              "updatedAt": "2024-01-16T20:31:02Z",
-              "tag": "2024-01-16--20-31-02Z",
+              "tag": "unreleased",
               "compatibility": {
                 "cli": "3.0.0-alpha.0",
                 "web": "3.0.0-alpha.0"
@@ -2098,8 +2037,7 @@
             }
           ],
           "version": {
-            "updatedAt": "2024-01-16T20:31:02Z",
-            "tag": "2024-01-16--20-31-02Z",
+            "tag": "unreleased",
             "compatibility": {
               "cli": "3.0.0-alpha.0",
               "web": "3.0.0-alpha.0"
diff --git a/data_output/nextstrain/flu/h1n1pdm/ha/CY121680/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h1n1pdm/ha/CY121680/unreleased/CHANGELOG.md
index d5c74543..8088453e 100644
--- a/data_output/nextstrain/flu/h1n1pdm/ha/CY121680/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h1n1pdm/ha/CY121680/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 Initial release for Nextclade v3!
 
diff --git a/data_output/nextstrain/flu/h1n1pdm/ha/MW626062/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h1n1pdm/ha/MW626062/unreleased/CHANGELOG.md
index d5c74543..8088453e 100644
--- a/data_output/nextstrain/flu/h1n1pdm/ha/MW626062/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h1n1pdm/ha/MW626062/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 Initial release for Nextclade v3!
 
diff --git a/data_output/nextstrain/flu/h1n1pdm/mp/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h1n1pdm/mp/unreleased/CHANGELOG.md
index 353eafe4..1b5ba3a6 100644
--- a/data_output/nextstrain/flu/h1n1pdm/mp/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h1n1pdm/mp/unreleased/CHANGELOG.md
@@ -1,3 +1,3 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
-Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
\ No newline at end of file
+Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
diff --git a/data_output/nextstrain/flu/h1n1pdm/na/MW626056/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h1n1pdm/na/MW626056/unreleased/CHANGELOG.md
index 5d7c67a6..067b9457 100644
--- a/data_output/nextstrain/flu/h1n1pdm/na/MW626056/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h1n1pdm/na/MW626056/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 Initial release for Nextclade v3!
 
diff --git a/data_output/nextstrain/flu/h1n1pdm/np/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h1n1pdm/np/unreleased/CHANGELOG.md
index 353eafe4..1b5ba3a6 100644
--- a/data_output/nextstrain/flu/h1n1pdm/np/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h1n1pdm/np/unreleased/CHANGELOG.md
@@ -1,3 +1,3 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
-Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
\ No newline at end of file
+Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
diff --git a/data_output/nextstrain/flu/h1n1pdm/ns/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h1n1pdm/ns/unreleased/CHANGELOG.md
index 353eafe4..1b5ba3a6 100644
--- a/data_output/nextstrain/flu/h1n1pdm/ns/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h1n1pdm/ns/unreleased/CHANGELOG.md
@@ -1,3 +1,3 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
-Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
\ No newline at end of file
+Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
diff --git a/data_output/nextstrain/flu/h1n1pdm/pa/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h1n1pdm/pa/unreleased/CHANGELOG.md
index 353eafe4..1b5ba3a6 100644
--- a/data_output/nextstrain/flu/h1n1pdm/pa/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h1n1pdm/pa/unreleased/CHANGELOG.md
@@ -1,3 +1,3 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
-Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
\ No newline at end of file
+Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
diff --git a/data_output/nextstrain/flu/h1n1pdm/pb1/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h1n1pdm/pb1/unreleased/CHANGELOG.md
index 353eafe4..1b5ba3a6 100644
--- a/data_output/nextstrain/flu/h1n1pdm/pb1/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h1n1pdm/pb1/unreleased/CHANGELOG.md
@@ -1,3 +1,3 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
-Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
\ No newline at end of file
+Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
diff --git a/data_output/nextstrain/flu/h1n1pdm/pb2/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h1n1pdm/pb2/unreleased/CHANGELOG.md
index 353eafe4..1b5ba3a6 100644
--- a/data_output/nextstrain/flu/h1n1pdm/pb2/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h1n1pdm/pb2/unreleased/CHANGELOG.md
@@ -1,3 +1,3 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
-Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
\ No newline at end of file
+Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
diff --git a/data_output/nextstrain/flu/h3n2/ha/CY163680/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h3n2/ha/CY163680/unreleased/CHANGELOG.md
index 7fe8db4d..5e03b234 100644
--- a/data_output/nextstrain/flu/h3n2/ha/CY163680/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h3n2/ha/CY163680/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 Initial release for Nextclade v3!
 
diff --git a/data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/CHANGELOG.md
index 7fe8db4d..5e03b234 100644
--- a/data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h3n2/ha/EPI1857216/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 Initial release for Nextclade v3!
 
diff --git a/data_output/nextstrain/flu/h3n2/mp/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h3n2/mp/unreleased/CHANGELOG.md
index 353eafe4..1b5ba3a6 100644
--- a/data_output/nextstrain/flu/h3n2/mp/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h3n2/mp/unreleased/CHANGELOG.md
@@ -1,3 +1,3 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
-Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
\ No newline at end of file
+Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
diff --git a/data_output/nextstrain/flu/h3n2/na/EPI1857215/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h3n2/na/EPI1857215/unreleased/CHANGELOG.md
index 5d7c67a6..067b9457 100644
--- a/data_output/nextstrain/flu/h3n2/na/EPI1857215/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h3n2/na/EPI1857215/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 Initial release for Nextclade v3!
 
diff --git a/data_output/nextstrain/flu/h3n2/np/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h3n2/np/unreleased/CHANGELOG.md
index 353eafe4..1b5ba3a6 100644
--- a/data_output/nextstrain/flu/h3n2/np/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h3n2/np/unreleased/CHANGELOG.md
@@ -1,3 +1,3 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
-Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
\ No newline at end of file
+Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
diff --git a/data_output/nextstrain/flu/h3n2/ns/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h3n2/ns/unreleased/CHANGELOG.md
index 353eafe4..1b5ba3a6 100644
--- a/data_output/nextstrain/flu/h3n2/ns/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h3n2/ns/unreleased/CHANGELOG.md
@@ -1,3 +1,3 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
-Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
\ No newline at end of file
+Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
diff --git a/data_output/nextstrain/flu/h3n2/pa/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h3n2/pa/unreleased/CHANGELOG.md
index 353eafe4..1b5ba3a6 100644
--- a/data_output/nextstrain/flu/h3n2/pa/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h3n2/pa/unreleased/CHANGELOG.md
@@ -1,3 +1,3 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
-Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
\ No newline at end of file
+Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
diff --git a/data_output/nextstrain/flu/h3n2/pb1/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h3n2/pb1/unreleased/CHANGELOG.md
index 353eafe4..1b5ba3a6 100644
--- a/data_output/nextstrain/flu/h3n2/pb1/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h3n2/pb1/unreleased/CHANGELOG.md
@@ -1,3 +1,3 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
-Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
\ No newline at end of file
+Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
diff --git a/data_output/nextstrain/flu/h3n2/pb2/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/h3n2/pb2/unreleased/CHANGELOG.md
index 353eafe4..1b5ba3a6 100644
--- a/data_output/nextstrain/flu/h3n2/pb2/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/h3n2/pb2/unreleased/CHANGELOG.md
@@ -1,3 +1,3 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
-Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
\ No newline at end of file
+Initial release of for non-HA/NA segments of Influenza A viruses based on genome in RefSeq.
diff --git a/data_output/nextstrain/flu/vic/ha/KX058884/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/vic/ha/KX058884/unreleased/CHANGELOG.md
index b0b78733..3479866f 100644
--- a/data_output/nextstrain/flu/vic/ha/KX058884/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/vic/ha/KX058884/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
  - fix subclade definition of C.2 and C.4
 
diff --git a/data_output/nextstrain/flu/vic/na/CY073894/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/vic/na/CY073894/unreleased/CHANGELOG.md
index 93ba863d..b3b42b73 100644
--- a/data_output/nextstrain/flu/vic/na/CY073894/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/vic/na/CY073894/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 Initial release for Nextclade v3!
 
diff --git a/data_output/nextstrain/flu/yam/ha/JN993010/unreleased/CHANGELOG.md b/data_output/nextstrain/flu/yam/ha/JN993010/unreleased/CHANGELOG.md
index 5d7c67a6..067b9457 100644
--- a/data_output/nextstrain/flu/yam/ha/JN993010/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/flu/yam/ha/JN993010/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 Initial release for Nextclade v3!
 
diff --git a/data_output/nextstrain/mpox/all-clades/unreleased/CHANGELOG.md b/data_output/nextstrain/mpox/all-clades/unreleased/CHANGELOG.md
index 919c624d..3f0323a3 100644
--- a/data_output/nextstrain/mpox/all-clades/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/mpox/all-clades/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 Initial release of this dataset. This dataset is similar to the v2 dataset [`MPXV/ancestral`](https://github.com/nextstrain/nextclade_data/tree/2023-08-17--15-51-24--UTC/data/datasets/MPXV/references/ancestral/versions/2023-08-01T12%3A00%3A00Z/files) with some differences.
 
diff --git a/data_output/nextstrain/mpox/clade-iib/unreleased/CHANGELOG.md b/data_output/nextstrain/mpox/clade-iib/unreleased/CHANGELOG.md
index 1a0c18a8..11a05f84 100644
--- a/data_output/nextstrain/mpox/clade-iib/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/mpox/clade-iib/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 Initial release of this dataset. This dataset is similar to the v2 dataset [`hMPXV/NC_063383.1`](https://github.com/nextstrain/nextclade_data/tree/2023-08-17--15-51-24--UTC/data/datasets/hMPXV/references/NC_063383.1/versions/2023-08-01T12%3A00%3A00Z/files) with some differences.
 
diff --git a/data_output/nextstrain/mpox/lineage-b.1/unreleased/CHANGELOG.md b/data_output/nextstrain/mpox/lineage-b.1/unreleased/CHANGELOG.md
index f941baec..c842890a 100644
--- a/data_output/nextstrain/mpox/lineage-b.1/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/mpox/lineage-b.1/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 Initial release of this dataset. This dataset is similar to the v2 dataset [`hMPXV_B.1/pseudo_ON563414`](https://github.com/nextstrain/nextclade_data/tree/2023-08-17--15-51-24--UTC/data/datasets/hMPXV_B.1/references/pseudo_ON563414/versions/2023-08-01T12%3A00%3A00Z/files) with some differences.
 
diff --git a/data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/CHANGELOG.md b/data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/CHANGELOG.md
index 4a47c429..bdcc4be8 100644
--- a/data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/rsv/a/EPI_ISL_412866/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 **first release of v3 dataset.**
 
diff --git a/data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/CHANGELOG.md b/data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/CHANGELOG.md
index 4a47c429..bdcc4be8 100644
--- a/data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/rsv/b/EPI_ISL_1653999/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 **first release of v3 dataset.**
 
diff --git a/data_output/nextstrain/sars-cov-2/BA.2.86/unreleased/CHANGELOG.md b/data_output/nextstrain/sars-cov-2/BA.2.86/unreleased/CHANGELOG.md
index 0b181e6e..c166658c 100644
--- a/data_output/nextstrain/sars-cov-2/BA.2.86/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/sars-cov-2/BA.2.86/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 Initial release of this v3 dataset.
 
diff --git a/data_output/nextstrain/sars-cov-2/BA.2/unreleased/CHANGELOG.md b/data_output/nextstrain/sars-cov-2/BA.2/unreleased/CHANGELOG.md
index a674271a..4e0c5ada 100644
--- a/data_output/nextstrain/sars-cov-2/BA.2/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/sars-cov-2/BA.2/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 Initial release of this v3 dataset.
 
diff --git a/data_output/nextstrain/sars-cov-2/XBB/unreleased/CHANGELOG.md b/data_output/nextstrain/sars-cov-2/XBB/unreleased/CHANGELOG.md
index 0b181e6e..c166658c 100644
--- a/data_output/nextstrain/sars-cov-2/XBB/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/sars-cov-2/XBB/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 Initial release of this v3 dataset.
 
diff --git a/data_output/nextstrain/sars-cov-2/wuhan-hu-1/orfs/unreleased/CHANGELOG.md b/data_output/nextstrain/sars-cov-2/wuhan-hu-1/orfs/unreleased/CHANGELOG.md
index 9d14da7d..4103afa0 100644
--- a/data_output/nextstrain/sars-cov-2/wuhan-hu-1/orfs/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/sars-cov-2/wuhan-hu-1/orfs/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 Initial release of this v3 dataset.
 
diff --git a/data_output/nextstrain/sars-cov-2/wuhan-hu-1/proteins/unreleased/CHANGELOG.md b/data_output/nextstrain/sars-cov-2/wuhan-hu-1/proteins/unreleased/CHANGELOG.md
index 8c66f4fc..a29fb764 100644
--- a/data_output/nextstrain/sars-cov-2/wuhan-hu-1/proteins/unreleased/CHANGELOG.md
+++ b/data_output/nextstrain/sars-cov-2/wuhan-hu-1/proteins/unreleased/CHANGELOG.md
@@ -1,4 +1,4 @@
-## Unreleased
+## 2024-01-16T20:31:02Z
 
 Initial release of this v3 dataset.