diff --git a/.github/workflows/build-sd-image.yml b/.github/workflows/build-sd-image.yml
index 36ea47a..887aac0 100644
--- a/.github/workflows/build-sd-image.yml
+++ b/.github/workflows/build-sd-image.yml
@@ -14,7 +14,7 @@ jobs:
         run: sudo apt-get install qemu-user-static
 
       - name: Install Nix
-        uses: cachix/install-nix-action@v30
+        uses: cachix/install-nix-action@v31
         with:
           extra_nix_config: |
             system = aarch64-linux
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 5679e5d..25c8d7c 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -20,7 +20,7 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v30
+      - uses: cachix/install-nix-action@v31
       # TODO: add a binary cache
       # - uses: cachix/cachix-action@v10
       #   with:
@@ -33,5 +33,5 @@ jobs:
     runs-on: ubuntu-24.04
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v30
+      - uses: cachix/install-nix-action@v31
       - run: nix shell nixpkgs#alejandra -c alejandra -c .
diff --git a/.github/workflows/test-my-packages.yml b/.github/workflows/test-my-packages.yml
index 124bc94..c2f8b1b 100644
--- a/.github/workflows/test-my-packages.yml
+++ b/.github/workflows/test-my-packages.yml
@@ -26,7 +26,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Install Nix
-        uses: cachix/install-nix-action@v30
+        uses: cachix/install-nix-action@v31
         # with:
         #   extra_nix_config: |
         #     # system = ${{ matrix.platform }}