diff --git a/setup.py b/setup.py
index 0ed4ddd..f9001be 100755
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,8 @@ required = [
     'dateparser',
     'iso8601',
     'python-dateutil',
-    'ruamel.yaml'
+    'ruamel.yaml',
+    'tzlocal'
 ]
 
 setup(