diff --git a/setup.py b/setup.py
index 353ed6b..77644ed 100644
--- a/setup.py
+++ b/setup.py
@@ -11,7 +11,7 @@
     packages=['githubscore'],
     include_package_data=True,
     install_requires=[
-        'arrow==0.13.0',
+        'arrow==0.15.1',
         'bs4==0.0.1',
         'Flask==1.0.2',
         'html5validator==0.3.1',