diff --git a/flake.nix b/flake.nix
index b33c848..53d7c18 100644
--- a/flake.nix
+++ b/flake.nix
@@ -37,7 +37,7 @@
     extra-substituters = [
       "https://cache.iog.io"
       "https://foliage.cachix.org"
-      "https://ci.zw3rk.com"
+      "https://cache.zw3rk.com"
      ];
     extra-trusted-public-keys = [
       "hydra.iohk.io:f/Ea+s+dFdN+3Y/G+FDgSq+a5NEWhJGzdjvKNGv0/EQ="