diff --git a/.github/actions/install-homebrew-valgrind/action.yml b/.github/actions/install-homebrew-valgrind/action.yml
index 4a0f4e0bb1..d766749fde 100644
--- a/.github/actions/install-homebrew-valgrind/action.yml
+++ b/.github/actions/install-homebrew-valgrind/action.yml
@@ -9,8 +9,14 @@ runs:
       shell: bash
 
     - run: |
-        brew --cache
-        ls -l "$(brew --cache)/valgrind--git"
+        sw_vers > valgrind_fingerprint
+        brew config >> valgrind_fingerprint
+        git -C "$(brew --cache)/valgrind--git" rev-parse HEAD >> valgrind_fingerprint
+        cat valgrind_fingerprint
+      shell: bash
+
+    - run: |
+        cat valgrind_fingerprint
       shell: bash
 
     - run: |