diff --git a/.github/workflows/test-build.yml b/.github/workflows/test-build.yml
index a00fe8a..c80086f 100644
--- a/.github/workflows/test-build.yml
+++ b/.github/workflows/test-build.yml
@@ -33,8 +33,8 @@ jobs:
     - uses: actions/checkout@v2
     - name: install dependencies
       run: |
+        brew install gcc@9
         brew install emacs
-        brew install gcc-9
         brew install autoconf automake libtool
     - name: Run test
       run: |