diff --git a/CHANGELOG.md b/CHANGELOG.md
index 5cbfe87..85b6849 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [3.1.0] - 2019-07-15
+
+### Added
+
+- Added Tree widget [#237]
+
 ## [3.0.0] - 2019-03-07
 
 ### Changed
@@ -115,7 +121,9 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Rename Par widget to Paragraph
 - Rename MBarChart widget to StackedBarChart
 
+[#237]: https://github.com/gizak/termui/pull/237
 [#126]: https://github.com/gizak/termui/pull/126
 
-[Unreleased]: https://github.com/gizak/termui/compare/v3.0.0...HEAD
+[Unreleased]: https://github.com/gizak/termui/compare/v3.1.0...HEAD
+[3.1.0]: https://github.com/gizak/termui/compare/v3.0.0...v3.1.0
 [3.0.0]: https://github.com/gizak/termui/compare/v2.3.0...v3.0.0