diff --git a/CHANGELOG.md b/CHANGELOG.md
index 16deee0..e9b10bb 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -9,6 +9,7 @@ All notable changes to this project will be documented in this file.
 
 ##### Fixed
 - Timestamps with unixtime (instead of django timezone).
+- Field refresh_token cannot be primary key if null.
 
 ### [0.4.4] - 2016-11-29