diff --git a/.github/workflows/actionlint.yml b/.github/workflows/actionlint.yml
index 24798c8..0095570 100644
--- a/.github/workflows/actionlint.yml
+++ b/.github/workflows/actionlint.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=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 58cbfff..341682f 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v26
+    - uses: cachix/install-nix-action@V27
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -40,7 +40,7 @@ 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=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/nix-develop.yml b/.github/workflows/nix-develop.yml
index efd981c..e5fdcd4 100644
--- a/.github/workflows/nix-develop.yml
+++ b/.github/workflows/nix-develop.yml
@@ -28,7 +28,7 @@ jobs:
     - uses: actions/checkout@v4
       with:
         fetch-depth: 0 # Nix Flakes doesn't work on shallow clones
-    - uses: cachix/install-nix-action@v26
+    - uses: cachix/install-nix-action@V27
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index fbf33d0..c76771c 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -19,7 +19,7 @@ jobs:
     - uses: actions/checkout@v4
       with:
         fetch-depth: 0 # Nix Flakes doesn't work on shallow clones
-    - uses: cachix/install-nix-action@v26
+    - uses: cachix/install-nix-action@V27
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -39,7 +39,7 @@ jobs:
     - uses: actions/checkout@v4
       with:
         fetch-depth: 0 # Nix Flakes doesn't work on shallow clones
-    - uses: cachix/install-nix-action@v26
+    - uses: cachix/install-nix-action@V27
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -58,7 +58,7 @@ 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=${{ secrets.GITHUB_TOKEN }}
@@ -77,7 +77,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v26
+    - uses: cachix/install-nix-action@V27
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -96,7 +96,7 @@ 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=${{ secrets.GITHUB_TOKEN }}
@@ -115,7 +115,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v26
+    - uses: cachix/install-nix-action@V27
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -136,7 +136,7 @@ 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=${{ secrets.GITHUB_TOKEN }}
@@ -155,7 +155,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v26
+    - uses: cachix/install-nix-action@V27
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -175,7 +175,7 @@ jobs:
     needs: dependencies
     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=${{ secrets.GITHUB_TOKEN }}
@@ -200,7 +200,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v26
+    - uses: cachix/install-nix-action@V27
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
@@ -221,7 +221,7 @@ 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=${{ secrets.GITHUB_TOKEN }}
@@ -240,7 +240,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-    - uses: cachix/install-nix-action@v26
+    - uses: cachix/install-nix-action@V27
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/update-flake-lock.yml b/.github/workflows/update-flake-lock.yml
index ae6d245..7a32c59 100644
--- a/.github/workflows/update-flake-lock.yml
+++ b/.github/workflows/update-flake-lock.yml
@@ -12,7 +12,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@v26
+        uses: cachix/install-nix-action@V27
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}