diff --git a/.github/workflows/build.yaml b/.github/workflows/build.yaml
index 7fc93e7..ede1730 100644
--- a/.github/workflows/build.yaml
+++ b/.github/workflows/build.yaml
@@ -33,8 +33,8 @@ jobs:
       uses: cachix/install-nix-action@v22
       with:
         extra_nix_config: |
-          trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ= loony-tools:pr9m4BkM/5/eSTZlkQyRt57Jz7OMBxNSUiMC4FkcNfk= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
-          substituters = https://cache.iog.io/ https://cache.zw3rk.com/ https://cache.nixos.org/
+          trusted-public-keys = cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY= loony-tools:pr9m4BkM/5/eSTZlkQyRt57Jz7OMBxNSUiMC4FkcNfk= cache.nixos.org-1:6NCHdD59X431o0gWypbMrAURkbJ16ZPMQFGspcDShjY=
+          substituters = https://cache.zw3rk.com/ https://cache.nixos.org/
         nix_path: nixpkgs=channel:nixos-unstable
 
     - name: 🧊 Prepare Cache