diff --git a/hosts/heather/jupyter.nix b/hosts/heather/jupyter.nix
index d98350e..b014ff3 100644
--- a/hosts/heather/jupyter.nix
+++ b/hosts/heather/jupyter.nix
@@ -27,7 +27,7 @@ in {
     path = with pkgs; [ bash ];
     environment = {
       HOME = "/home/mikl";
-      PATH = "${jupyterEnv}/bin:/run/current-system/sw/bin";
+      PATH = lib.mkForce "${jupyterEnv}/bin:/run/current-system/sw/bin";
     };
     serviceConfig = {
       Type = "simple";