diff --git a/.github/workflows/build-sd-image.yml b/.github/workflows/build-sd-image.yml
index 887aac0..caef2ee 100644
--- a/.github/workflows/build-sd-image.yml
+++ b/.github/workflows/build-sd-image.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Install QEMU
         run: sudo apt-get install qemu-user-static
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index a546bb3..f7a8481 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -19,7 +19,7 @@ jobs:
           - harmonica
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: cachix/install-nix-action@v31
       # TODO: add a binary cache
       # - uses: cachix/cachix-action@v10
@@ -32,6 +32,6 @@ jobs:
   check-formatting:
     runs-on: ubuntu-24.04
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v5
       - uses: cachix/install-nix-action@v31
       - run: nix run nixpkgs#nixfmt-tree -- --ci
diff --git a/.github/workflows/test-my-packages.yml b/.github/workflows/test-my-packages.yml
index c2f8b1b..91ec739 100644
--- a/.github/workflows/test-my-packages.yml
+++ b/.github/workflows/test-my-packages.yml
@@ -23,7 +23,7 @@ jobs:
           # - python311Packages.fastmri # broken for now
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
 
       - name: Install Nix
         uses: cachix/install-nix-action@v31