diff --git a/src/dependency_injector/ext/flask.py b/src/dependency_injector/ext/flask.py
index ba738242..8dcafc70 100644
--- a/src/dependency_injector/ext/flask.py
+++ b/src/dependency_injector/ext/flask.py
@@ -1,5 +1,7 @@
 """Flask extension module."""
 
+from __future__ import absolute_import
+
 from flask import Flask
 
 from dependency_injector import providers, errors