diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 3d1516ca0f0a..771c4eabb2c0 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -29,7 +29,7 @@ jobs:
 
     - name: Cache cabal global package db
       id:   cabal-global
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: |
           ~/.cabal
@@ -37,7 +37,7 @@ jobs:
 
     - name: Cache cabal work
       id:   cabal-local
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: |
           dist-newstyle
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 5de152cbb23b..6ff8f654a274 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -80,7 +80,7 @@ jobs:
 
     - name: Cache cabal global package db
       id:   cabal-global
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: |
           ~/.local/state/cabal
@@ -88,7 +88,7 @@ jobs:
 
     - name: Cache cabal work
       id:   cabal-local
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: |
           dist-newstyle
@@ -118,7 +118,7 @@ jobs:
     # declare/restore cached things
     - name: Cache stack global package db
       id:   stack-global
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: |
           ~/.stack
@@ -126,7 +126,7 @@ jobs:
 
     - name: Cache stack work
       id:   stack-local
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: |
           .stack-work
@@ -148,14 +148,14 @@ jobs:
 #       nix_path: nixpkgs=channel:nixos-24.05
 #   - name: Cache cabal global package db
 #     id:   cabal-global
-#     uses: actions/cache@v4
+#     uses: actions/cache@v5
 #     with:
 #       path: |
 #         ~/.local/state/cabal
 #       key: ${{ runner.os }}-nix-cabal-global-${{ secrets.CACHE_VERSION }}
 #   - name: Cache cabal work
 #     id:   cabal-local
-#     uses: actions/cache@v4
+#     uses: actions/cache@v5
 #     with:
 #       path: |
 #         dist-newstyle
@@ -179,7 +179,7 @@ jobs:
 
     - name: Cache cabal global package db
       id:   cabal-global
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: |
           C:\cabal\store
@@ -187,7 +187,7 @@ jobs:
 
     - name: Cache cabal work
       id: cabal-local
-      uses: actions/cache@v4
+      uses: actions/cache@v5
       with:
         path: |
           dist-newstyle
@@ -221,7 +221,7 @@ jobs:
 
 #   - name: Cache cabal global package db
 #     id:   cabal-global
-#     uses: actions/cache@v4
+#     uses: actions/cache@v5
 #     with:
 #       path: |
 #         ~/.cabal
@@ -229,7 +229,7 @@ jobs:
 
 #   - name: Cache cabal work
 #     id:   cabal-local
-#     uses: actions/cache@v4
+#     uses: actions/cache@v5
 #     with:
 #       path: |
 #         dist-newstyle