diff --git a/packages/proto-signing/package.json b/packages/proto-signing/package.json
index 8a6c5001..194731d9 100644
--- a/packages/proto-signing/package.json
+++ b/packages/proto-signing/package.json
@@ -42,7 +42,7 @@
     "coverage": "nyc --reporter=text --reporter=lcov yarn test --quiet",
     "pack-web": "yarn build-or-skip && webpack --mode development --config webpack.web.config.js",
     "preget-proto": "shx rm -rf proto",
-    "get-proto": "REF=v0.40.0-rc3 ./scripts/get-proto.sh",
+    "get-proto": "REF=v0.40.0 ./scripts/get-proto.sh",
     "predefine-proto": "./scripts/predefine-proto.sh",
     "define-proto": "./scripts/define-proto.sh",
     "postdefine-proto": "prettier --write \"src/codec/generated/codecimpl.*\""