diff --git a/.github/workflows/cd.yml b/.github/workflows/cd.yml
index 01c0cb8..108f40c 100644
--- a/.github/workflows/cd.yml
+++ b/.github/workflows/cd.yml
@@ -28,6 +28,9 @@ jobs:
         shell: bash
         run: |
           source ./.github/workflows/install-conda.sh
+          if [[ `uname` == "Darwin" ]]; then
+            brew reinstall gcc
+          fi
 
       - name: Deploy packages
         if: startsWith(github.ref, 'refs/tags/') && matrix.no-deploy != '1'
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 6c92d7c..d116434 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -28,6 +28,9 @@ jobs:
       shell: bash
       run: |
         source ./.github/workflows/reload-env.sh
+        if [[ `uname` == "Darwin" ]]; then
+          brew reinstall gcc
+        fi
         python setup.py build_ext -i
 
     - name: Test with unittest