diff --git a/iceweasel/requirements.txt b/iceweasel/requirements.txt
index 0eb8535..38b860f 100644
--- a/iceweasel/requirements.txt
+++ b/iceweasel/requirements.txt
@@ -60,7 +60,7 @@ pycrypto==2.6.1
 Pygments==2.4.0
 PyNaCl==1.3.0
 python-dateutil==2.8.0
-python-ldap==3.2.0
+python-ldap==3.4.0
 pytz==2019.1
 PyYAML==5.1
 requests==2.22.0