diff --git a/.github/workflows/build_wasm.yml b/.github/workflows/build_wasm.yml
index ea96797e..35fffe0e 100644
--- a/.github/workflows/build_wasm.yml
+++ b/.github/workflows/build_wasm.yml
@@ -3,6 +3,8 @@ name: 'Build WebAssembly'
 on:
   push:
     tags: [ '*' ]
+    branches:
+      - master
       
   workflow_dispatch: