diff --git a/machines/kcnhub/servers/jupyterhub.nix b/machines/kcnhub/servers/jupyterhub.nix
index 0c84eb8..d5d9c06 100644
--- a/machines/kcnhub/servers/jupyterhub.nix
+++ b/machines/kcnhub/servers/jupyterhub.nix
@@ -133,7 +133,7 @@
     # Configuration options defined ^
     # mem_limit must be higher to allow for MATLAB
     extraConfig = ''
-      c.SystemdSpawner.mem_limit = '8G'
+      c.SystemdSpawner.mem_limit = '32G'
       c.SystemdSpawner.cpu_limit = 2.0
       c.SystemdSpawner.isolate_devices = False
       c.SystemdSpawner.extra_paths = [
@@ -164,7 +164,7 @@
       jupyterhub
       jupyterlab
       # Extensions:
-      jupyter-collaboration
+      # jupyter-collaboration
       jupyter-server-mathjax
       jupyter-console
       jupyterlab-lsp