diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 7b8a10d..7a00846 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -21,6 +21,7 @@ jobs:
             - uses: actions/checkout@master
 
             - name: Install action dependencies
+              if: github.ref == 'master'
               run: npm install --production
 
             - name: Install D compiler