diff --git a/.github/workflows/mac.yml b/.github/workflows/mac.yml
index 9562178d34ba..cc8bb9f85f4e 100644
--- a/.github/workflows/mac.yml
+++ b/.github/workflows/mac.yml
@@ -22,7 +22,7 @@ jobs:
 
     - name: Toolchain Cache
       id: mac-toolchain
-      uses: actions/cache@v2
+      uses: actions/cache@v2.1.4
       with:
         path: /usr/local
         key: mac-toolchain