diff --git a/.github/workflows/check-elixir-app.yml b/.github/workflows/check-elixir-app.yml
index a9168e6..7337da8 100644
--- a/.github/workflows/check-elixir-app.yml
+++ b/.github/workflows/check-elixir-app.yml
@@ -17,7 +17,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-elixir.yml b/.github/workflows/check-elixir.yml
index 2075338..3915adf 100644
--- a/.github/workflows/check-elixir.yml
+++ b/.github/workflows/check-elixir.yml
@@ -17,7 +17,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-flake-utils.yml b/.github/workflows/check-flake-utils.yml
index d18ca2c..bd72743 100644
--- a/.github/workflows/check-flake-utils.yml
+++ b/.github/workflows/check-flake-utils.yml
@@ -17,7 +17,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-    - uses: cachix/install-nix-action@V28
+    - uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-gleam.yml b/.github/workflows/check-gleam.yml
index 5636049..8f1d944 100644
--- a/.github/workflows/check-gleam.yml
+++ b/.github/workflows/check-gleam.yml
@@ -17,7 +17,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-minimal.yml b/.github/workflows/check-minimal.yml
index 918f612..89dd6f4 100644
--- a/.github/workflows/check-minimal.yml
+++ b/.github/workflows/check-minimal.yml
@@ -17,7 +17,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-    - uses: cachix/install-nix-action@V28
+    - uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-node-typescript.yml b/.github/workflows/check-node-typescript.yml
index 956c1b6..27b7332 100644
--- a/.github/workflows/check-node-typescript.yml
+++ b/.github/workflows/check-node-typescript.yml
@@ -16,7 +16,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-    - uses: cachix/install-nix-action@V28
+    - uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-ocaml.yml b/.github/workflows/check-ocaml.yml
index 12a3913..4f2a485 100644
--- a/.github/workflows/check-ocaml.yml
+++ b/.github/workflows/check-ocaml.yml
@@ -17,7 +17,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-pre-commit.yml b/.github/workflows/check-pre-commit.yml
index bc66e1a..8a198b3 100644
--- a/.github/workflows/check-pre-commit.yml
+++ b/.github/workflows/check-pre-commit.yml
@@ -17,7 +17,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-rust.yml b/.github/workflows/check-rust.yml
index b19335c..838aa6c 100644
--- a/.github/workflows/check-rust.yml
+++ b/.github/workflows/check-rust.yml
@@ -17,7 +17,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-treefmt.yml b/.github/workflows/check-treefmt.yml
index 2b3676f..12b3d1e 100644
--- a/.github/workflows/check-treefmt.yml
+++ b/.github/workflows/check-treefmt.yml
@@ -17,7 +17,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 646b108..dc29b71 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -13,5 +13,5 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
       - run: nix flake check ./dev -L --override-input src path:.
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index 4a8bb71..bc947b0 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -16,7 +16,7 @@ jobs:
     steps:
     - uses: actions/checkout@v4
 
-    - uses: cachix/install-nix-action@V28
+    - uses: cachix/install-nix-action@v29
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}