diff --git a/setup.py b/setup.py
index 6677ac6a..c20d07d6 100644
--- a/setup.py
+++ b/setup.py
@@ -45,7 +45,7 @@ install_requires = [
     'SQLAlchemy-Utils==0.32.9',
     'requests==2.12.1',
     'psycopg2==2.6.2',
-    'arrow==0.8.0',
+    'arrow==0.9.0',
     'six==1.10.0',
     'gunicorn==19.6.0',
     'marshmallow-sqlalchemy==0.12.0',