diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 8b31a90..d411ece 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -8,6 +8,7 @@ on:
 jobs:
   build:
     runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/master'
 
     steps:
       - name: Checkout master
diff --git a/.github/workflows/sync.yml b/.github/workflows/sync.yml
index dfb6da5..5d7a114 100644
--- a/.github/workflows/sync.yml
+++ b/.github/workflows/sync.yml
@@ -8,6 +8,7 @@ on:
 jobs:
   sync:
     runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/master'
 
     steps:
       - name: Fork sync