diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 37d627f..bf47fe2 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -7,5 +7,5 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v3
-    - uses: cachix/install-nix-action@v17
+    - uses: cachix/install-nix-action@v20
     - run: nix-build