From 5e8e23b43dcfe6d2f21f8a7f9f64b48c4b337a4d Mon Sep 17 00:00:00 2001
From: Dave Willmer <dave.willmer@gmail.com>
Date: Wed, 19 Jul 2017 23:25:12 +0100
Subject: [PATCH] Add whatsnew item

---
 doc/source/whatsnew/v0.21.0.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/doc/source/whatsnew/v0.21.0.txt b/doc/source/whatsnew/v0.21.0.txt
index 7c52cf6f450b2..7f1007d25e9ce 100644
--- a/doc/source/whatsnew/v0.21.0.txt
+++ b/doc/source/whatsnew/v0.21.0.txt
@@ -186,6 +186,7 @@ Sparse
 Reshaping
 ^^^^^^^^^
 - Joining/Merging with a non unique ``PeriodIndex`` raised a TypeError (:issue:`16871`)
+- Merging with categorical date columns raised a TypeError (:issue:`16900`)
 
 
 Numeric