diff --git a/.github/workflows/ci-nix.yml b/.github/workflows/ci-nix.yml
index 0f21e535..6277b73a 100644
--- a/.github/workflows/ci-nix.yml
+++ b/.github/workflows/ci-nix.yml
@@ -21,7 +21,7 @@ jobs:
     timeout-minutes: 30
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@V27
+      - uses: cachix/install-nix-action@V28
         with:
           nix_path: nixpkgs=channel:nixos-23.05
       - uses: cachix/cachix-action@v15
@@ -47,7 +47,7 @@ jobs:
     timeout-minutes: 30
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@V27
+      - uses: cachix/install-nix-action@V28
         with:
           nix_path: nixpkgs=channel:nixos-23.05
       - uses: cachix/cachix-action@v15