diff --git a/.github/workflows/nix.yml b/.github/workflows/nix.yml
index 9ff08036c..297e8ec18 100644
--- a/.github/workflows/nix.yml
+++ b/.github/workflows/nix.yml
@@ -12,7 +12,7 @@ jobs:
         uses: actions/checkout@v4
         with:
           submodules: true
-      - uses: cachix/install-nix-action@V28
+      - uses: cachix/install-nix-action@v29
         with:
           nix_path: nixpkgs=channel:nixos-unstable
       - run: nix develop -c dune build @runtest @check