diff --git a/docs/changelog.rst b/docs/changelog.rst
index 9a606812..741d3f8d 100644
--- a/docs/changelog.rst
+++ b/docs/changelog.rst
@@ -4,6 +4,7 @@ Changelog
 
 Development
 ===========
+- mongoengine now requires pymongo>=3.5 #2017
 - (Fill this out as you fix issues and develop your features).
 
 Changes in 0.17.0