diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index a903f61..fdd3816 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -234,7 +234,7 @@ jobs:
         cabal build all --dry-run
 
     - name: 💾 Restore cache
-      uses: actions/cache/restore@v5
+      uses: actions/cache/restore@v6
       id: restore-cabal-cache
       env:
         key: build-botan-${{ runner.os }}-ghc-${{ steps.setup-haskell.outputs.ghc-version }}-cabal-${{ steps.setup-haskell.outputs.cabal-version }}-Botan-${{ matrix.botan-version }}
@@ -262,7 +262,7 @@ jobs:
         cabal build all --only-dependencies
 
     - name: 💾 Save cache
-      uses: actions/cache/save@v5
+      uses: actions/cache/save@v6
       if: ${{ steps.restore-cabal-cache.outputs.cache-hit != 'true' }}
       with:
         path: ${{ steps.setup-haskell.outputs.cabal-store }}
diff --git a/.github/workflows/documentation.yml b/.github/workflows/documentation.yml
index e18ea58..a1d5072 100644
--- a/.github/workflows/documentation.yml
+++ b/.github/workflows/documentation.yml
@@ -72,7 +72,7 @@ jobs:
       # rebuild dependencies regardless of whether we build the dependencies
       # manually beforehand.
     - name: 💾 Cache Cabal dependencies
-      uses: actions/cache@v5
+      uses: actions/cache@v6
       env:
         key: build-documentation-${{ runner.os }}-ghc-${{ steps.setup-haskell.outputs.ghc-version }}-cabal-${{ steps.setup-haskell.outputs.cabal-version }}
       with: