diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 65e35abe..788c99e5 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,7 +1,8 @@
 image: continuumio/miniconda3:latest
 
 before_script:
-- pip install jupyter-book==0.10.1 sphinxcontrib-bibtex~=2.1.0
+- conda install -y pyzmq
+- pip install jupyter-book sphinxcontrib-bibtex
 
 pages:
   stage: deploy