diff --git a/.github/.release-please-manifest.json b/.github/.release-please-manifest.json
index 816df2d..2537c1f 100644
--- a/.github/.release-please-manifest.json
+++ b/.github/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.3.1"
+  ".": "0.4.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8bf1c97..2b39f6e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.4.0](https://github.com/TrogonStack/trogonerror/compare/v0.3.1...v0.4.0) (2025-10-22)
+
+
+### Features
+
+* Implement idiomatic error handling with As function ([#14](https://github.com/TrogonStack/trogonerror/issues/14)) ([4a43641](https://github.com/TrogonStack/trogonerror/commit/4a43641f48579e09f8ccbe2bf5a699ae47841557))
+
 ## [0.3.1](https://github.com/TrogonStack/trogonerror/compare/v0.3.0...v0.3.1) (2025-08-26)