diff --git a/config-generator.nix b/config-generator.nix
index 21b73d0..7b19179 100644
--- a/config-generator.nix
+++ b/config-generator.nix
@@ -226,6 +226,7 @@ in
 
       r6d.config-generator = {
         docker = true;
+        hydra-builder = true;
         radicale = true;
         nix-serve-client = true;
         nix-serve-server = true;