diff --git a/requirements_dev.txt b/requirements_dev.txt
index be08b0e48fa6d518202c0c5c983c1f2a93b52598..222c05d3b571390eca185df128457d82af248579 100644
--- a/requirements_dev.txt
+++ b/requirements_dev.txt
@@ -12,6 +12,7 @@ gitpython
 git-lfs
 pb_tool
 recommonmark
+docutils
 sphinx
 sphinx-argparse
 sphinx-markdown