diff --git a/modules/webstack.nix b/modules/webstack.nix
index 85cefac..2792b05 100644
--- a/modules/webstack.nix
+++ b/modules/webstack.nix
@@ -208,7 +208,8 @@
   # Generate dhparams
   security.dhparams = {
     enable = true;
-    params.nginx.bits = 2048;
+    defaultBitSize = 4096;
+    params.nginx.bits = 4096;
   };
 
   # PostgreSQL databases configuration