diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0420eacc..ac947431 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -7,6 +7,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+## [3.1.0]
+
+### Added
+
+- Newly exports the following types: `Assign`, `If`, `IsUnion`, `ObjectType`, `PartialObjectSchema`, `StructSchema`, `TupleSchema` ([#25](https://github.com/MetaMask/superstruct/pull/25))
+
 ## [3.0.0]
 
 ### Added
@@ -623,7 +629,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Initial release.
 
-[Unreleased]: https://github.com/MetaMask/superstruct/compare/v3.0.0...HEAD
+[Unreleased]: https://github.com/MetaMask/superstruct/compare/v3.1.0...HEAD
+[3.1.0]: https://github.com/MetaMask/superstruct/compare/v3.0.0...v3.1.0
 [3.0.0]: https://github.com/MetaMask/superstruct/compare/v2.0.0...v3.0.0
 [2.0.0]: https://github.com/MetaMask/superstruct/compare/v1.0.0...v2.0.0
 [1.0.0]: https://github.com/MetaMask/superstruct/compare/v0.16.0...v1.0.0
diff --git a/package.json b/package.json
index 501b9177..1e7efb7b 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@metamask/superstruct",
-  "version": "3.0.0",
+  "version": "3.1.0",
   "description": "A simple and composable way to validate data in JavaScript (and TypeScript).",
   "keywords": [
     "api",