diff --git a/.github/workflows/ruby.yml b/.github/workflows/ruby.yml
index 1d84b91..3dda372 100644
--- a/.github/workflows/ruby.yml
+++ b/.github/workflows/ruby.yml
@@ -23,7 +23,7 @@ jobs:
     # from https://github.com/gjtorikian/html-proofer/blob/main/README.md#caching-with-continuous-integration
     - name: Cache HTMLProofer
       id: cache-htmlproofer
-      uses: actions/cache@27d5ce7f107fe9357f9df03efb73ab90386fccae # v5.0.5
+      uses: actions/cache@55cc8345863c7cc4c66a329aec7e433d2d1c52a9 # v6.1.0
       with:
         path: tmp/.htmlproofer
         key: ${{ runner.os }}-htmlproofer