diff --git a/main.nix b/main.nix
index 643aa83..baf38e2 100644
--- a/main.nix
+++ b/main.nix
@@ -3,7 +3,7 @@ let
   helpers = import ./helpers.nix;
 in {
   imports = [
-    "${builtins.fetchTarball https://github.com/rycee/home-manager/archive/master.tar.gz}/nixos"
+    "${builtins.fetchTarball https://github.com/rycee/home-manager/archive/release-18.09.tar.gz}/nixos"
     ./options.nix
     configs/hu-berlin.nix
     configs/shells.nix