diff --git a/requirements.txt b/requirements.txt
index 698ba8c..b928d8e 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -27,7 +27,7 @@ pyramid==1.10.4
 pyramid-multiauth==0.9.0
 pyramid-tm==2.4
 python-dateutil==2.8.1
-python-ldap==3.2.0
+python-ldap==3.4.0
 requests==2.23.0
 simplejson==3.17.0
 six==1.14.0