diff --git a/.github/workflows/ccpp.yml b/.github/workflows/ccpp.yml
index 66218e03..8ed70959 100644
--- a/.github/workflows/ccpp.yml
+++ b/.github/workflows/ccpp.yml
@@ -24,7 +24,7 @@ jobs:
     steps:
     - uses: actions/checkout@v1
     - name: install openssl
-      run: brew install openssl
+      run: brew install openssl@1.1
     - name: make test
       run: make test_tsan_openssl