diff --git a/docs/requirements.txt b/docs/requirements.txt
index 791c404..91d2aa6 100644
--- a/docs/requirements.txt
+++ b/docs/requirements.txt
@@ -9,3 +9,5 @@ ipython
 
 matplotlib
 sphinxcontrib-bibtex
+
+git+https://github.com/ipqa-research/ugropy