diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index dafe86b..1b93be8 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Install nixFlake
       uses: cachix/install-nix-action@v20
       with:
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index bae023b..5a71925 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -12,7 +12,7 @@ jobs:
         NEW_HASH: "Unknown"
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
       with:
         # Nix Flakes doesn't work on shallow clones
         fetch-depth: 0