diff --git a/.github/workflows/haddock.yml b/.github/workflows/haddock.yml
index ee1eb875e0..15a46cae8b 100644
--- a/.github/workflows/haddock.yml
+++ b/.github/workflows/haddock.yml
@@ -14,7 +14,7 @@ jobs:
       name: github-pages
     steps:
       - uses: actions/checkout@v3
-      - uses: cachix/install-nix-action@v22
+      - uses: cachix/install-nix-action@v31
         with:
           extra_nix_config: |
             experimental-features = nix-command flakes