diff --git a/modules/services/server/hydra.nix b/modules/services/server/hydra.nix
index 333e54e..d8bd13c 100644
--- a/modules/services/server/hydra.nix
+++ b/modules/services/server/hydra.nix
@@ -8,7 +8,7 @@
         listenHost = "127.0.0.1";
         notificationSender = "hydra@kabtop.de";
         useSubstitutes = true;
-        minimumDiskFree = 8;
+        minimumDiskFree = 50;
       };
       nix-serve = {
           enable = true;
@@ -48,15 +48,6 @@
       };
     };
 
-    security.acme = {
-      acceptTerms = true;
-      defaults = {
-        email = "webmaster@kabtop.de";
-        webroot = "/var/lib/acme/acme-challenge";
-        #server = "https://acme-staging-v02.api.letsencrypt.org/directory";
-      };
-    };
-    
     nix = {
       settings = {
         trusted-users = [