diff --git a/environment.yml b/environment.yml
index 69efd2c..851c7ce 100644
--- a/environment.yml
+++ b/environment.yml
@@ -3,6 +3,8 @@ channels:
 
 dependencies:
   - jupyter_contrib_nbextensions==0.5.1
+  - jupyterhub-base==2.3.1
+  - jupyterhub-singleuser=2.3.1
   - numpy
   - matplotlib
   - scipy