diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index c005874..b953124 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -14,7 +14,7 @@ jobs:
       contents: read
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           persist-credentials: false
       - name: Check Nix flake inputs
diff --git a/.github/workflows/update-flake-lock.yml b/.github/workflows/update-flake-lock.yml
index f3793e3..da04563 100644
--- a/.github/workflows/update-flake-lock.yml
+++ b/.github/workflows/update-flake-lock.yml
@@ -13,7 +13,7 @@ jobs:
       pull-requests: write
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           persist-credentials: false
       - name: Install Nix