diff --git a/.github/workflows/pr.yml b/.github/workflows/pr.yml
index c47b2f94e..3a0c41d6a 100644
--- a/.github/workflows/pr.yml
+++ b/.github/workflows/pr.yml
@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
-    - uses: cachix/install-nix-action@v17
+    - uses: cachix/install-nix-action@v18
       with:
         nix_path: nixpkgs=channel:nixos-unstable
         # nix 2.6 breaks restrict-eval, when using the NIX_PATH
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index c997596bd..985052871 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.yml
@@ -14,7 +14,7 @@ jobs:
     - uses: actions/checkout@v3
       with:
         fetch-depth: '0'
-    - uses: cachix/install-nix-action@v17
+    - uses: cachix/install-nix-action@v18
       with:
         nix_path: nixpkgs=channel:nixos-unstable
         # nix 2.6 breaks restrict-eval, when using the NIX_PATH
@@ -31,7 +31,7 @@ jobs:
     needs: update_nur
     steps:
     - uses: actions/checkout@v3
-    - uses: cachix/install-nix-action@v17
+    - uses: cachix/install-nix-action@v18
       with:
         nix_path: nixpkgs=channel:nixos-unstable
         extra_nix_config: |