From ac256f38555a1045f5ea071920e5cebef059ae1e Mon Sep 17 00:00:00 2001
From: Scott Sanderson <ssanderson@quantopian.com>
Date: Fri, 22 Jul 2016 15:15:03 -0400
Subject: [PATCH] MAINT: Use errors='coerce'.

coerce=True is deprecated.
---
 zipline/sources/requests_csv.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/zipline/sources/requests_csv.py b/zipline/sources/requests_csv.py
index c1ba028b..57d683f4 100644
--- a/zipline/sources/requests_csv.py
+++ b/zipline/sources/requests_csv.py
@@ -230,7 +230,7 @@ class PandasCSV(with_metaclass(ABCMeta, object)):
             parsed = pd.to_datetime(
                 date_str_series.values,
                 format=format_str,
-                coerce=True,
+                errors='coerce',
             ).tz_localize(tz_str).tz_convert('UTC')
 
         if data_frequency == 'daily':