diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index bbaeaac..8ba9b0f 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -14,7 +14,7 @@ jobs:
       run: |
         mastersha=$(gh api repos/plumed/plumed2/branches --paginate --jq '.[] | select( .name | match("^master$")) | .commit.sha')
         echo "key=$mastersha" >> $GITHUB_OUTPUT
-    - uses: actions/cache@v5
+    - uses: actions/cache@v6
       with:
         path: |
           ~/.ccache