diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9121cf91..cc46e251 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # CHANGELOG
 
+## [v1.3.1](https://github.com/jakezatecky/react-checkbox-tree/compare/v1.3.0...v1.3.1) (2018-09-06)
+
+### Bug Fixes
+
+* [#109]: Fix erroneous PropTypes check for `lang` property
+
 ## [v1.3.0](https://github.com/jakezatecky/react-checkbox-tree/compare/v1.2.4...v1.3.0) (2018-09-05)
 
 ### New Features
diff --git a/package.json b/package.json
index 2d590c0e..b6fa90a3 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "react-checkbox-tree",
-  "version": "1.3.0",
+  "version": "1.3.1",
   "description": "A simple and elegant checkbox tree for React.",
   "author": "Jake Zatecky",
   "license": "MIT",