diff --git a/CHANGELOG.md b/CHANGELOG.md
index 01ec76f..4ac20f4 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,10 @@ All notable changes to this project will be documented in this file.
 The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
+## [Unreleased]
+### Added
+- Check for uncommon filename extensions 
+
 ## [0.2.0] - 2019-08-09
 ### Added
 - Handle Ctrl-C interrupt gracefully