environment.yml: packages must support py3.6
@@ -8,6 +8,8 @@ dependencies:
- jupyter-resource-usage==0.6.0
- jupyterlab==3.1.0
- jupyterhub-singleuser==1.4.2
- - nbconvert==6.1.0
- - notebook==6.4.0
+ # Newer versions require python 3.7
+ - nbconvert==6.0.7
+ # 6.4.0 conda package requires python 3.7
+ - notebook==6.3.0
- nteract_on_jupyter==2.1.3
