diff --git a/scripts/updateBlockExplorerPluginChains.ts b/scripts/updateBlockExplorerPluginChains.ts
index 37c029ee62..d61790fd36 100644
--- a/scripts/updateBlockExplorerPluginChains.ts
+++ b/scripts/updateBlockExplorerPluginChains.ts
@@ -32,7 +32,7 @@ let count = 0
     res.json(),
   )) as {
     name: string
-    chainId: string
+    chainId: number
   }[]
 
   let content = 'type ChainId =\n'