diff --git a/.github/workflows/deadnix.yml b/.github/workflows/deadnix.yml
index 0967725fe..909789f9b 100644
--- a/.github/workflows/deadnix.yml
+++ b/.github/workflows/deadnix.yml
@@ -10,7 +10,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v26
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@v14
diff --git a/.github/workflows/fmt.yml b/.github/workflows/fmt.yml
index f78df32e4..ec7388c73 100644
--- a/.github/workflows/fmt.yml
+++ b/.github/workflows/fmt.yml
@@ -10,7 +10,7 @@ jobs:
 
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v26
         with:
           install_url: https://nixos.org/nix/install
           extra_nix_config: |
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 10821e645..52b2bab8d 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: cachix/install-nix-action@v25
+      - uses: cachix/install-nix-action@v26
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@v14
diff --git a/.github/workflows/update-flakes.yml b/.github/workflows/update-flakes.yml
index d9b84b766..36c3c4fbe 100644
--- a/.github/workflows/update-flakes.yml
+++ b/.github/workflows/update-flakes.yml
@@ -10,7 +10,7 @@ jobs:
     steps:
       - uses: actions/checkout@v4
       - name: Install Nix
-        uses: cachix/install-nix-action@v25
+        uses: cachix/install-nix-action@v26
         with:
           extra_nix_config: |
             access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}