diff --git a/requirements.txt b/requirements.txt
index bc6c0bb27..11409cc93 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -15,7 +15,7 @@ pyexcel-io==0.4.2
 pyexcel-xls==0.4.0
 pyexcel-xlsx==0.4.0
 pyexcel-ods3==0.4.0
-pytz==2016.4
+pytz==2017.2
 six==1.10.0
 gunicorn==19.6.0
 whitenoise==1.0.6  #manages static assets