diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 12197ce..a10bc26 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - uses: cachix/install-nix-action@v22
       - name: Check ${{ matrix.check }}
         # Depends on nixos/nix#7759 to simply `nix flake check`
@@ -43,7 +43,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Install nix
       uses: cachix/install-nix-action@v22
     - name: Show nixpkgs version
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index c4b9c66..7c116df 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -11,7 +11,7 @@ jobs:
       fail-fast: false
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - uses: cachix/install-nix-action@v22
         with:
           extra_nix_config: |