diff --git a/packages/cosmwasm-stargate/package.json b/packages/cosmwasm-stargate/package.json
index c0bbb4d2..c7d34ad3 100644
--- a/packages/cosmwasm-stargate/package.json
+++ b/packages/cosmwasm-stargate/package.json
@@ -62,6 +62,7 @@
   },
   "devDependencies": {
     "@types/pako": "^1.0.1",
-    "readonly-date": "^1.0.0"
+    "readonly-date": "^1.0.0",
+    "ts-proto": "^1.50.0"
   }
 }