diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 083639e..c35a98e 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: "${{ matrix.os }}"
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@V27
+      - uses: cachix/install-nix-action@V28
       - uses: cachix/cachix-action@v15
         with:
           name: dschrempf-nix-script
@@ -31,7 +31,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@V27
+      - uses: cachix/install-nix-action@V28
       - uses: cachix/cachix-action@v15
         with:
           name: nix-script
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index af70ab1..2bf2396 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v4
         with:
           ref: main
-      - uses: cachix/install-nix-action@V27
+      - uses: cachix/install-nix-action@V28
       - run: nix flake update
       - name: Create PR
         env: