From d21aec17e2b9ff950c550966d600c844d1e206e0 Mon Sep 17 00:00:00 2001
From: Thomas Wiecki <thomas.wiecki@gmail.com>
Date: Fri, 16 Oct 2015 15:53:11 +0200
Subject: [PATCH] MAINT Change relativedelta to Timedelta as pandas 0.17.0
 deprecated relativedelta.

---
 zipline/utils/tradingcalendar.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/zipline/utils/tradingcalendar.py b/zipline/utils/tradingcalendar.py
index 6759fec0..d8131796 100644
--- a/zipline/utils/tradingcalendar.py
+++ b/zipline/utils/tradingcalendar.py
@@ -23,7 +23,7 @@ start = pd.Timestamp('1990-01-01', tz='UTC')
 end_base = pd.Timestamp('today', tz='UTC')
 # Give an aggressive buffer for logic that needs to use the next trading
 # day or minute.
-end = end_base + pd.datetools.relativedelta(years=1)
+end = end_base + pd.Timedelta(days=365)
 
 
 def canonicalize_datetime(dt):