diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 0fd62745..1ac52af9 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -42,7 +42,7 @@ jobs:
         bundler-cache: true
         ruby-version: ${{ matrix.ruby }}
 
-    - uses: actions/cache@v4
+    - uses: actions/cache@v5
       with:
         path: ~/.cache/red-datasets
         key: ${{ runner.os }}-${{ hashFiles('charty.gemspec') }}
diff --git a/.github/workflows/pycall.yml b/.github/workflows/pycall.yml
index c1f08466..6d88915e 100644
--- a/.github/workflows/pycall.yml
+++ b/.github/workflows/pycall.yml
@@ -57,7 +57,7 @@ jobs:
         bundler-cache: true
         ruby-version: ${{ matrix.ruby }}
 
-    - uses: actions/cache@v4
+    - uses: actions/cache@v5
       with:
         path: ~/.cache/red-datasets
         key: ${{ runner.os }}-${{ hashFiles('charty.gemspec') }}