diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index cccc59471..c2cb10198 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -1122,6 +1122,8 @@ jobs:
       - name: Show Clang++ version before brew install llvm
         run: clang++ --version
 
+      - run: brew update
+
       - name: brew install llvm
         run: brew install llvm