diff --git a/.github/workflows/deploy-gh-pages.yml b/.github/workflows/deploy-gh-pages.yml
index 1f23013..ff33f1a 100644
--- a/.github/workflows/deploy-gh-pages.yml
+++ b/.github/workflows/deploy-gh-pages.yml
@@ -45,7 +45,7 @@ jobs:
       PR_HEADSHA: ${{ needs.pr-context.outputs.PR_HEADSHA }}
       PR_NUMBER:  ${{ needs.pr-context.outputs.PR_NUMBER  }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
         with:
           repository: jerith666/elbum-demo
           submodules: true
diff --git a/.github/workflows/niv-update.yml b/.github/workflows/niv-update.yml
index 9edd1db..c21c48a 100644
--- a/.github/workflows/niv-update.yml
+++ b/.github/workflows/niv-update.yml
@@ -12,7 +12,7 @@ jobs:
       # lamdera is unfree
       NIXPKGS_ALLOW_UNFREE: 1
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v6
       with:
         submodules: true
     - uses: jlumbroso/free-disk-space@main
diff --git a/.github/workflows/nix-build.yml b/.github/workflows/nix-build.yml
index dfa6a21..7eba4ea 100644
--- a/.github/workflows/nix-build.yml
+++ b/.github/workflows/nix-build.yml
@@ -9,7 +9,7 @@ jobs:
     name: nix-build can build the project
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - uses: cachix/install-nix-action@v31
@@ -30,7 +30,7 @@ jobs:
       # lamdera is unfree
       NIXPKGS_ALLOW_UNFREE: 1
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
         with:
           submodules: true
       - uses: cachix/install-nix-action@v31
diff --git a/.github/workflows/nix-format-check.yml b/.github/workflows/nix-format-check.yml
index b711f36..a843952 100644
--- a/.github/workflows/nix-format-check.yml
+++ b/.github/workflows/nix-format-check.yml
@@ -9,7 +9,7 @@ jobs:
       # lamdera is unfree
       NIXPKGS_ALLOW_UNFREE: 1
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
       - uses: cachix/install-nix-action@v31
         with:
           nix_path: nixpkgs=channel:nixos-unstable