diff --git a/.github/workflows/nightly.yaml b/.github/workflows/nightly.yaml
index 5773c7c..3d512cc 100644
--- a/.github/workflows/nightly.yaml
+++ b/.github/workflows/nightly.yaml
@@ -11,7 +11,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3.5.3
+    - uses: actions/checkout@v4.0.0
     - uses: nixbuild/nix-quick-install-action@v21
       with:
         nix_conf: |
diff --git a/.github/workflows/nix-darwin.yaml b/.github/workflows/nix-darwin.yaml
index 3d8417f..8d93f8d 100644
--- a/.github/workflows/nix-darwin.yaml
+++ b/.github/workflows/nix-darwin.yaml
@@ -11,7 +11,7 @@ jobs:
 
     runs-on: macOS-latest
     steps:
-    - uses: actions/checkout@v3.5.3
+    - uses: actions/checkout@v4.0.0
 
     - uses: nixbuild/nix-quick-install-action@v21
       with:
diff --git a/.github/workflows/nix-linux.yaml b/.github/workflows/nix-linux.yaml
index fb371ec..9c86b17 100644
--- a/.github/workflows/nix-linux.yaml
+++ b/.github/workflows/nix-linux.yaml
@@ -9,7 +9,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3.5.3
+    - uses: actions/checkout@v4.0.0
     - uses: nixbuild/nix-quick-install-action@v21
       with:
         nix_conf: |