diff --git a/HISTORY.rst b/HISTORY.rst
index efb9b6f2..80e9e292 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -9,6 +9,7 @@ dev
 **Improvements**
 
 - Warn user about possible slowdown when using cryptography version < 1.3.4
+- Use rfc3986 for URL parsing.
 
 **Bugfixes**