diff --git a/requirements.txt b/requirements.txt
index 8cd45c059437ba0d74f4b4e188a11b51469fdd17..51da9ec34932d63d72ef9042f5fded3e43bcabfc 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -24,6 +24,7 @@ Flask-ESearch==0.3.0
 Flask-SSE==1.0.0
 Flask-PluginKit==3.6.0
 Flask-ResponseBuilder==2.0.12
+Flask-BS4==5.0.0.0
 SQLAlchemy==1.3.23
 psycopg2==2.8.6
 wget==3.2