diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index a6ba456..9ce20a8 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v26
+    - uses: cachix/install-nix-action@V27
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ github.token }}
@@ -32,7 +32,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v26
+    - uses: cachix/install-nix-action@V27
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ github.token }}
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 3babd1b..4007d8a 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -42,7 +42,7 @@ jobs:
     runs-on: ${{ matrix.platform.host }}
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v26
+    - uses: cachix/install-nix-action@V27
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ github.token }}