diff --git a/.github/workflows/doc.yml b/.github/workflows/doc.yml
index 70062c6b..64697d15 100644
--- a/.github/workflows/doc.yml
+++ b/.github/workflows/doc.yml
@@ -43,6 +43,7 @@ jobs:
         run: |
           set -e
           set -x
+          brew uninstall pkg-config@0.29.2
           source doc/_readme/scripts/install_macos.sh
 
       - name: Install dependencies on Ubuntu
diff --git a/.github/workflows/go.yml b/.github/workflows/go.yml
index 093b7014..13b31da4 100644
--- a/.github/workflows/go.yml
+++ b/.github/workflows/go.yml
@@ -41,6 +41,7 @@ jobs:
       - name: Install dependencies
         if: startsWith(matrix.os, 'macos')
         run: |
+          brew uninstall pkg-config@0.29.2
           brew update
           brew install llvm@${{matrix.llvm}} pkg-config bdw-gc openssl libffi
           echo "$(brew --prefix llvm@${{matrix.llvm}})/bin" >> $GITHUB_PATH