diff --git a/phenopipe-web/requirements.txt b/phenopipe-web/requirements.txt
index 9a5ed07..db4edfb 100644
--- a/phenopipe-web/requirements.txt
+++ b/phenopipe-web/requirements.txt
@@ -48,7 +48,7 @@ PyJWT==1.4.2
 Pyphen==0.9.4
 python-dateutil==2.6.1
 python-editor==1.0.3
-python-ldap==2.4.30
+python-ldap==3.4.0
 pytz==2017.2
 redis==2.10.5
 requests==2.18.4