diff --git a/CHANGELOG.md b/CHANGELOG.md
index a326f9cfe..02ec6bb54 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Changelog
 
-## v0.31.0 - UNRELEASED
+## v0.31.0 - 2023-09-13
 
 ### Changed
 
@@ -8,7 +8,7 @@
 
 ### Removed
 
-- The prompts for `generateStructure` and `generateStructureOrText` have been simplified. You can remove the `OpenAIChatPrompt.forStructureCurried` (and similar) parts.
+- **breaking change**: The prompts for `generateStructure` and `generateStructureOrText` have been simplified. You can remove the `OpenAIChatPrompt.forStructureCurried` (and similar) parts.
 
 ## v0.30.0 - 2023-09-10
 
diff --git a/package.json b/package.json
index eca3044fe..ab74278da 100644
--- a/package.json
+++ b/package.json
@@ -1,7 +1,7 @@
 {
   "name": "modelfusion",
   "description": "Build multimodal applications, chatbots, and agents with JavaScript and TypeScript.",
-  "version": "0.30.1",
+  "version": "0.31.0",
   "author": "Lars Grammel",
   "license": "MIT",
   "keywords": [