diff --git a/testnets/initia/chain.json b/testnets/initia/chain.json
index 7555370..d770b4a 100644
--- a/testnets/initia/chain.json
+++ b/testnets/initia/chain.json
@@ -193,7 +193,7 @@
         "provider": "ITRocket"
       },
       {
-        "address": "35.240.231.235:9090",
+        "address": "grpc://35.240.231.235:9090",
         "provider": "Initia Labs",
         "authorizedUser": "skip"
       }
diff --git a/testnets/minimove/chain.json b/testnets/minimove/chain.json
index 904593a..2c640db 100644
--- a/testnets/minimove/chain.json
+++ b/testnets/minimove/chain.json
@@ -81,7 +81,7 @@
         "provider": "Initia Labs"
       },
       {
-        "address": "34.124.136.240:9090",
+        "address": "grpc://34.124.136.240:9090",
         "provider": "Initia Labs",
         "authorizedUser": "skip"
       }
diff --git a/testnets/miniwasm/chain.json b/testnets/miniwasm/chain.json
index 1c00be1..8cbedf2 100644
--- a/testnets/miniwasm/chain.json
+++ b/testnets/miniwasm/chain.json
@@ -81,7 +81,7 @@
         "provider": "Initia Labs"
       },
       {
-        "address": "34.124.147.66:9090",
+        "address": "grpc://34.124.147.66:9090",
         "provider": "Initia Labs",
         "authorizedUser": "skip"
       }