diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6e1207196a145cf6525fbe61067b13e19bd9cb53..f2e6e93d68a55eaefb2e97cae411327e4b70ef3e 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -6,7 +6,7 @@ pages:
   script:
   - apt-get update
   - apt-get install --assume-yes pandoc
-  - pip install numpy pandas termcolor  # top import of Ohmpi.py
+  - pip install numpy pandas termcolor paho-mqtt  # top import of Ohmpi.py
   - pip install sphinx numpydoc sphinx_rtd_theme pandoc recommonmark
   - cd doc
   - make html