diff --git a/requirements/optional.txt b/requirements/optional.txt
index 55a66160b8..4bdc5d5425 100644
--- a/requirements/optional.txt
+++ b/requirements/optional.txt
@@ -1 +1 @@
-python-ldap==3.4.0 # optional for LDAP authentication, requires libldap (OpenLDAP) to build
+python-ldap==3.4.4 # optional for LDAP authentication, requires libldap (OpenLDAP) to build