diff --git a/.github/workflows/hook-dependabot.yml b/.github/workflows/hook-dependabot.yml
index b678be5..851936a 100644
--- a/.github/workflows/hook-dependabot.yml
+++ b/.github/workflows/hook-dependabot.yml
@@ -17,7 +17,7 @@ jobs:
     env:
       head_ref: ${{ github.event.pull_request.head.ref }}
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           ref: ${{ env.head_ref }}
       - uses: DeterminateSystems/nix-installer-action@v19
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index cce6c8c..8e6611a 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -12,7 +12,7 @@ jobs:
   test:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: DeterminateSystems/determinate-nix-action@v3
         with:
           extra-conf: |
diff --git a/.github/workflows/update-nix.yml b/.github/workflows/update-nix.yml
index 7047879..ad214ef 100644
--- a/.github/workflows/update-nix.yml
+++ b/.github/workflows/update-nix.yml
@@ -12,7 +12,7 @@ jobs:
   lockfile:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: DeterminateSystems/determinate-nix-action@v3
         with:
           extra-conf: |