diff --git a/nix/homeModules/common/user-nixconf.nix b/nix/homeModules/common/user-nixconf.nix
index b021d610..574a939e 100644
--- a/nix/homeModules/common/user-nixconf.nix
+++ b/nix/homeModules/common/user-nixconf.nix
@@ -26,6 +26,9 @@
       ];
       allow-import-from-derivation = true;
       keep-outputs = false; # Build time derivations and sources
+
+      http-connections = 50; # default: 25
+      max-substitution-jobs = 32; # default: 16
     };
   };
 }