diff --git a/.github/workflows/check-elixir-phoenix.yml b/.github/workflows/check-elixir-phoenix.yml
index 3c35d59..f54e4ba 100644
--- a/.github/workflows/check-elixir-phoenix.yml
+++ b/.github/workflows/check-elixir-phoenix.yml
@@ -16,7 +16,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v26
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-elixir.yml b/.github/workflows/check-elixir.yml
index 784a26b..44c7859 100644
--- a/.github/workflows/check-elixir.yml
+++ b/.github/workflows/check-elixir.yml
@@ -16,7 +16,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v26
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-flake-utils.yml b/.github/workflows/check-flake-utils.yml
index ca9b824..5249050 100644
--- a/.github/workflows/check-flake-utils.yml
+++ b/.github/workflows/check-flake-utils.yml
@@ -16,7 +16,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-    - uses: cachix/install-nix-action@v25
+    - uses: cachix/install-nix-action@v26
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-gleam.yml b/.github/workflows/check-gleam.yml
index 768c1f7..6732ba9 100644
--- a/.github/workflows/check-gleam.yml
+++ b/.github/workflows/check-gleam.yml
@@ -16,7 +16,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v26
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-minimal.yml b/.github/workflows/check-minimal.yml
index 0b7ebf2..47c78d9 100644
--- a/.github/workflows/check-minimal.yml
+++ b/.github/workflows/check-minimal.yml
@@ -16,7 +16,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-    - uses: cachix/install-nix-action@v25
+    - uses: cachix/install-nix-action@v26
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-node-typescript.yml b/.github/workflows/check-node-typescript.yml
index 5eadb32..f1c1611 100644
--- a/.github/workflows/check-node-typescript.yml
+++ b/.github/workflows/check-node-typescript.yml
@@ -15,7 +15,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-    - uses: cachix/install-nix-action@v25
+    - uses: cachix/install-nix-action@v26
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-ocaml.yml b/.github/workflows/check-ocaml.yml
index 446ce65..18241b0 100644
--- a/.github/workflows/check-ocaml.yml
+++ b/.github/workflows/check-ocaml.yml
@@ -16,7 +16,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v26
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-pre-commit.yml b/.github/workflows/check-pre-commit.yml
index 0ec4da8..082dd83 100644
--- a/.github/workflows/check-pre-commit.yml
+++ b/.github/workflows/check-pre-commit.yml
@@ -16,7 +16,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v26
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-rust.yml b/.github/workflows/check-rust.yml
index ed956f6..e59d9c6 100644
--- a/.github/workflows/check-rust.yml
+++ b/.github/workflows/check-rust.yml
@@ -16,7 +16,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v26
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/check-treefmt.yml b/.github/workflows/check-treefmt.yml
index fde68e7..84455f2 100644
--- a/.github/workflows/check-treefmt.yml
+++ b/.github/workflows/check-treefmt.yml
@@ -16,7 +16,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v26
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index fd35582..1b62922 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@v25
+      - uses: cachix/install-nix-action@v26
       - run: nix flake check ./dev -L --override-input src path:.
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index 185d36f..585e446 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@v25
+    - uses: cachix/install-nix-action@v26
       with:
         extra_nix_config: |
           access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}