diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index aaa4b54..3828885 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -37,7 +37,7 @@ jobs:
       - name: Resolve dependencies
         run: cabal build all --dry-run
 
-      - uses: actions/cache@v4
+      - uses: actions/cache@v6
         with:
           path: ${{ steps.setup.outputs.cabal-store }}
           key: cabal-${{ runner.os }}-ghc-${{ steps.setup.outputs.ghc-version }}-${{ hashFiles('dist-newstyle/cache/plan.json') }}
@@ -65,7 +65,7 @@ jobs:
           cabal-version: latest
           cabal-update: true
 
-      - uses: actions/cache@v4
+      - uses: actions/cache@v6
         with:
           path: ${{ steps.setup.outputs.cabal-store }}
           key: doctest-${{ runner.os }}-ghc-${{ steps.setup.outputs.ghc-version }}-${{ hashFiles('**/*.cabal') }}
diff --git a/.github/workflows/spec-drift.yml b/.github/workflows/spec-drift.yml
index 3593d32..94b6891 100644
--- a/.github/workflows/spec-drift.yml
+++ b/.github/workflows/spec-drift.yml
@@ -42,7 +42,7 @@ jobs:
           cabal-version: latest
           cabal-update: true
 
-      - uses: actions/cache@v4
+      - uses: actions/cache@v6
         if: steps.sync.outputs.changed == 'true'
         with:
           path: ${{ steps.setup.outputs.cabal-store }}