diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index c609b241..fdff54a2 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -2,9 +2,9 @@ name: build
 
 on:
   push:
-    branches: [ ** ]
+    branches: [ '**' ]
   pull_request:
-    branches: [ ** ]
+    branches: [ '**' ]
 
 jobs:
   build: