diff --git a/packages/demo-protobuf/package.json b/packages/demo-protobuf/package.json
index 997dc050..913b9bf8 100644
--- a/packages/demo-protobuf/package.json
+++ b/packages/demo-protobuf/package.json
@@ -32,7 +32,7 @@
     "test-chrome": "yarn pack-web && karma start --single-run --browsers ChromeHeadless",
     "test": "yarn build-or-skip && yarn test-node",
     "pack-web": "yarn build-or-skip && webpack --mode development --config webpack.web.config.js",
-    "get-proto": "./scripts/get-proto.sh",
+    "get-proto": "REF=master ./scripts/get-proto.sh",
     "prepack-proto": "mkdir -p src/generated",
     "pack-proto": "pbjs -t static-module -w commonjs -o src/generated/codecimpl.js --sparse --no-beautify --no-delimited --no-verify --no-convert ./proto/cosmos/cosmos-sdk/{x/bank/types/types.proto,types/types.proto,types/tx/types.proto,types/tx/signing/types.proto,third_party/proto/tendermint/**/*.proto,crypto/types/types.proto}",
     "define-proto": "pbts src/generated/codecimpl.js -o src/generated/codecimpl.d.ts"