diff --git a/.github/workflows/darwin.yml b/.github/workflows/darwin.yml
index 4dc83a5..198343f 100644
--- a/.github/workflows/darwin.yml
+++ b/.github/workflows/darwin.yml
@@ -17,7 +17,7 @@ jobs:
         preset: [ci-macos]
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Install nix
         uses: cachix/install-nix-action@v31
         with:
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 8a85f48..10c3d95 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -18,7 +18,7 @@ jobs:
       contents: write
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Install nix
         uses: cachix/install-nix-action@v31
         with:
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index f358c14..0d5090f 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Install nix
         uses: cachix/install-nix-action@v31
         with:
diff --git a/.github/workflows/linux.yml b/.github/workflows/linux.yml
index 44c80a5..a6efc60 100644
--- a/.github/workflows/linux.yml
+++ b/.github/workflows/linux.yml
@@ -17,7 +17,7 @@ jobs:
         preset: [ci-coverage, ci-sanitize, ci-ubuntu-clang]
     steps:
       - name: Checkout source code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Install nix
         uses: cachix/install-nix-action@v31
         with:
@@ -33,7 +33,7 @@ jobs:
           echo "dius_rev=$rev" >> "$GITHUB_ENV"
         if: matrix.preset == 'ci-sanitize' || matrix.preset == 'ci-ubuntu-clang'
       - name: Override the dius checkout to non nix
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
         with:
           repository: coletrammer/dius
           ref: ${{ env.dius_rev }}