diff --git a/pages/requirements.txt b/pages/requirements.txt
index 02f405ec124424507b5d96a2de33a1f7f1ba8246..d5ae2cc06eb26afe413c3bb61d067fb9f4d1db58 100644
--- a/pages/requirements.txt
+++ b/pages/requirements.txt
@@ -2,3 +2,4 @@ mkdocs==1.2.2
 mkdocs-git-revision-date-localized-plugin==0.10.3
 mkdocs-macros-plugin==0.6.3
 Jinja2==2.11.2
+MarkupSafe==1.1.1