diff --git a/.github/workflows/nix-build.yaml b/.github/workflows/nix-build.yaml
index e6484887..1a073536 100644
--- a/.github/workflows/nix-build.yaml
+++ b/.github/workflows/nix-build.yaml
@@ -60,7 +60,7 @@ jobs:
           fetch-depth: 0
 
       - name: Install Nix
-        uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+        uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
         with:
           extra_nix_config: |
             auto-optimise-store = true
diff --git a/.github/workflows/nix-lint.yaml b/.github/workflows/nix-lint.yaml
index 85b10999..1a40f646 100644
--- a/.github/workflows/nix-lint.yaml
+++ b/.github/workflows/nix-lint.yaml
@@ -15,7 +15,7 @@ jobs:
         uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4
 
       - name: Install Nix
-        uses: cachix/install-nix-action@8887e596b4ee1134dae06b98d573bd674693f47c # v26
+        uses: cachix/install-nix-action@ba0dd844c9180cbf77aa72a116d6fbc515d0e87b # v27
         with:
           nix_path: nixpkgs=channel:nixos-unstable
           extra_nix_config: |