diff --git a/docs/docsite/requirements.txt b/docs/docsite/requirements.txt
index baa23a4568e..f85de8eb706 100644
--- a/docs/docsite/requirements.txt
+++ b/docs/docsite/requirements.txt
@@ -1,2 +1,3 @@
 #pip packages required to build docssite
 sphinx
+PyYAML