diff --git a/.github/workflows/terraform.yaml b/.github/workflows/terraform.yaml
index fe24035..2a53904 100644
--- a/.github/workflows/terraform.yaml
+++ b/.github/workflows/terraform.yaml
@@ -13,7 +13,7 @@ jobs:
   check:
     runs-on: ubuntu-latest
     steps:
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v31
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@v15
@@ -28,7 +28,7 @@ jobs:
       - check
     runs-on: ubuntu-latest
     steps:
-      - uses: cachix/install-nix-action@v27
+      - uses: cachix/install-nix-action@v31
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - uses: cachix/cachix-action@v15