diff --git a/.github/workflows/cachix.yml b/.github/workflows/cachix.yml
index e5a60b30..c410aa3e 100644
--- a/.github/workflows/cachix.yml
+++ b/.github/workflows/cachix.yml
@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - uses: cachix/install-nix-action@v17
+      - uses: cachix/install-nix-action@v18
       - name: Cachix
         uses: cachix/cachix-action@v10
         with:
diff --git a/.github/workflows/update.yml b/.github/workflows/update.yml
index df9daea7..5452e40d 100644
--- a/.github/workflows/update.yml
+++ b/.github/workflows/update.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
       - name: Cachix
         uses: cachix/cachix-action@v10
         with: