diff --git a/professor/__init__.py b/professor/__init__.py
index 736e540..72663bc 100644
--- a/professor/__init__.py
+++ b/professor/__init__.py
@@ -41,7 +41,7 @@ class SessionFlask(SessionMixin, Flask): pass
 
 import pymongo
 dbname = app.config.get('MONGODB_CONFIG', {}).pop('db', 'professor')
-conn = pymongo.Connection(**app.config.get('MONGODB_CONFIG', {}))
+conn = pymongo.MongoClient(**app.config.get('MONGODB_CONFIG', {}))
 db = conn[dbname]
 
 app.session_store = MongoSessionStore(db.session)