diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 82292f6..4efa63b 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -89,7 +89,7 @@ jobs:
             trusted-substituters = https://cache.nixos.org https://nixpkgs.cachix.org https://nixpkgs-unfree.cachix.org https://nix-community.cachix.org
             trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= nixpkgs.cachix.org-1:q91R6hxbwFvDqTSDKwDAV4T5PxqXGxswD8vhONFMeOE= nixpkgs-unfree.cachix.org-1:hqvoInulhbV4nJ9yJOEr+4wxhDV4xq2d1DK7S6Nj6rs= nix-community.cachix.org-1:mB9FSh9qf2dCimDSUo8Zy7bkq5CX+/rkCWyvRCYg3Fs=
       - name: Prepare build
-        uses: cachix/cachix-action@v30
+        uses: cachix/cachix-action@v15
         with:
           name: fmo-os
           authToken: '${{ secrets.CACHIX_TOKEN }}'