diff --git a/CHANGELOG.md b/CHANGELOG.md
index fdef65b..52f2100 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,13 @@
 # Deox Changelog
 
+# [3.1.0](https://github.com/thebrodmann/deox/compare/v3.0.1...v3.1.0) (2019-12-08)
+
+
+### Features
+
+* add isOfType helper ([#127](https://github.com/thebrodmann/deox/issues/127)) ([03e6210](https://github.com/thebrodmann/deox/commit/03e6210b9d2866ba0a99c5811254bdeb031ae738)), closes [#87](https://github.com/thebrodmann/deox/issues/87)
+* generalize isOfType keys argument to readonly array ([cc01d9d](https://github.com/thebrodmann/deox/commit/cc01d9dbd72ba59dbea4a1916e254c4ddfe9adfa))
+
 ## [3.0.1](https://github.com/thebrodmann/deox/compare/v3.0.0...v3.0.1) (2019-12-07)
 
 
diff --git a/package.json b/package.json
index 9123aa6..720393f 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "deox",
-  "version": "3.0.1",
+  "version": "3.1.0",
   "description": "Functional Type-safe Flux Standard Utilities",
   "types": "dist/index.d.ts",
   "main": "dist/index.js",