diff --git a/CHANGELOG.md b/CHANGELOG.md
index aebefd02..568400ac 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,17 @@
 # @fission-ai/openspec
 
+## 0.4.0
+
+### Minor Changes
+
+- Add OpenSpec change proposals for CLI improvements and enhanced user experience
+- Add Opencode slash commands support for AI-driven development workflows
+
+### Patch Changes
+
+- Add documentation improvements including --yes flag for archive command template and Discord badge
+- Fix normalize line endings in markdown parser to handle CRLF files properly
+
 ## 0.3.0
 
 ### Minor Changes
diff --git a/package.json b/package.json
index 4d2fb569..50c68d65 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@fission-ai/openspec",
-  "version": "0.3.0",
+  "version": "0.4.0",
   "description": "AI-native system for spec-driven development",
   "keywords": [
     "openspec",