diff --git a/setup.py b/setup.py
index cbb53b9..f348e17 100644
--- a/setup.py
+++ b/setup.py
@@ -15,6 +15,7 @@ setup(name='solardash',
     packages=[ 'solardash', ],
     install_requires=[
         'aiohttp',
+        'arrow',
         'RainEagle @ git+https://www.funkthat.com/gitea/jmg/RainEagle.git',
 	'mock',
     ],