diff --git a/packages/demo-protobuf/scripts/get-proto.sh b/packages/demo-protobuf/scripts/get-proto.sh
index 0617018b..00766542 100755
--- a/packages/demo-protobuf/scripts/get-proto.sh
+++ b/packages/demo-protobuf/scripts/get-proto.sh
@@ -14,6 +14,6 @@ SUFFIX=${REF}
 mkdir -p "$COSMOS_DIR"
 
 wget -qO "$ZIP_FILE" "https://github.com/cosmos/cosmos-sdk/archive/$REF.zip" \
-&& unzip "$ZIP_FILE" -d "$COSMOS_DIR" \
-&& mv "$COSMOS_SDK_DIR-$SUFFIX" "$COSMOS_SDK_DIR" \
-&& rm "$ZIP_FILE"
+  && unzip "$ZIP_FILE" "*.proto" -d "$COSMOS_DIR" \
+  && mv "$COSMOS_SDK_DIR-$SUFFIX" "$COSMOS_SDK_DIR" \
+  && rm "$ZIP_FILE"