diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py
index 12585abb1..cae81dbd6 100644
--- a/synapse/handlers/auth.py
+++ b/synapse/handlers/auth.py
@@ -60,6 +60,8 @@ class AuthHandler(BaseHandler):
 
         if self.ldap_enabled:
             import ldap
+            logger.info("Import ldap version: %s", ldap.__version__)
+
 
         self.hs = hs  # FIXME better possibility to access registrationHandler later?