diff --git a/common/changes/@subsquid/substrate-data/master_2024-10-07-15-11.json b/common/changes/@subsquid/substrate-data/master_2024-10-07-15-11.json
deleted file mode 100644
index fa3450e0..00000000
--- a/common/changes/@subsquid/substrate-data/master_2024-10-07-15-11.json
+++ /dev/null
@@ -1,10 +0,0 @@
-{
-  "changes": [
-    {
-      "packageName": "@subsquid/substrate-data",
-      "comment": "handle events from `MultiBlockMigrations` pallet",
-      "type": "patch"
-    }
-  ],
-  "packageName": "@subsquid/substrate-data"
-}
\ No newline at end of file
diff --git a/substrate/substrate-data/CHANGELOG.json b/substrate/substrate-data/CHANGELOG.json
index 14895aa4..1687273b 100644
--- a/substrate/substrate-data/CHANGELOG.json
+++ b/substrate/substrate-data/CHANGELOG.json
@@ -1,6 +1,18 @@
 {
   "name": "@subsquid/substrate-data",
   "entries": [
+    {
+      "version": "4.2.1",
+      "tag": "@subsquid/substrate-data_v4.2.1",
+      "date": "Mon, 07 Oct 2024 15:13:33 GMT",
+      "comments": {
+        "patch": [
+          {
+            "comment": "handle events from `MultiBlockMigrations` pallet"
+          }
+        ]
+      }
+    },
     {
       "version": "4.2.0",
       "tag": "@subsquid/substrate-data_v4.2.0",
diff --git a/substrate/substrate-data/CHANGELOG.md b/substrate/substrate-data/CHANGELOG.md
index bd3f0769..cb5f2f1f 100644
--- a/substrate/substrate-data/CHANGELOG.md
+++ b/substrate/substrate-data/CHANGELOG.md
@@ -1,6 +1,13 @@
 # Change Log - @subsquid/substrate-data
 
-This log was last generated on Thu, 25 Jul 2024 11:48:18 GMT and should not be manually modified.
+This log was last generated on Mon, 07 Oct 2024 15:13:33 GMT and should not be manually modified.
+
+## 4.2.1
+Mon, 07 Oct 2024 15:13:33 GMT
+
+### Patches
+
+- handle events from `MultiBlockMigrations` pallet
 
 ## 4.2.0
 Thu, 25 Jul 2024 11:48:18 GMT