diff --git a/.github/workflows/flake-check.yml b/.github/workflows/flake-check.yml
index 6039161..98303a5 100644
--- a/.github/workflows/flake-check.yml
+++ b/.github/workflows/flake-check.yml
@@ -15,7 +15,7 @@ jobs:
         with:
           # Nix Flakes doesn't work on shallow clones
           fetch-depth: 0
-      - uses: cachix/install-nix-action@v17
+      - uses: cachix/install-nix-action@v18
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - id: set-matrix
@@ -35,7 +35,7 @@ jobs:
         with:
           # Nix Flakes doesn't work on shallow clones
           fetch-depth: 0
-      - uses: cachix/install-nix-action@v17
+      - uses: cachix/install-nix-action@v18
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - run: |
diff --git a/.github/workflows/test-develop-flakes.yml b/.github/workflows/test-develop-flakes.yml
index 6a8d714..cc33cfc 100644
--- a/.github/workflows/test-develop-flakes.yml
+++ b/.github/workflows/test-develop-flakes.yml
@@ -15,7 +15,7 @@ jobs:
       with:
           # Nix Flakes doesn't work on shallow clones
           fetch-depth: 0
-    - uses: cachix/install-nix-action@v17
+    - uses: cachix/install-nix-action@v18
     - name: Build
       run: nix develop -c bash -c 'meson build && cd build && ninja'
     - name: Run tests
diff --git a/.github/workflows/update-flake-lock.yml b/.github/workflows/update-flake-lock.yml
index c60af9a..f7ab7b1 100644
--- a/.github/workflows/update-flake-lock.yml
+++ b/.github/workflows/update-flake-lock.yml
@@ -11,7 +11,7 @@ jobs:
       - name: Checkout repository
         uses: actions/checkout@v3
       - name: Install Nix
-        uses: cachix/install-nix-action@v17
+        uses: cachix/install-nix-action@v18
         # with:
         #   extra_nix_config: |
         #     access-tokens = github.com=${{ secrets.GITHUB_TOKEN }}