diff --git a/CHANGELOG.md b/CHANGELOG.md
index 0735b9f..1df73f3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,20 @@
 # Changelog
 
+## [1.9.0](https://github.com/GSA-TTS/agentic-coding-patterns/compare/v1.8.0...v1.9.0) (2026-08-12)
+
+
+### Features
+
+* **kits:** add neutral network.tier vocab (strict/balanced/open) to hybrid/v1 ([#300](https://github.com/GSA-TTS/agentic-coding-patterns/issues/300)) ([#313](https://github.com/GSA-TTS/agentic-coding-patterns/issues/313)) ([3f51984](https://github.com/GSA-TTS/agentic-coding-patterns/commit/3f519840aabdf106693862f8218102c0128a687b))
+* **network-tiers:** balanced baseline allowlist + deterministic additions guard ([#301](https://github.com/GSA-TTS/agentic-coding-patterns/issues/301), [#302](https://github.com/GSA-TTS/agentic-coding-patterns/issues/302)) ([#315](https://github.com/GSA-TTS/agentic-coding-patterns/issues/315)) ([aff5d63](https://github.com/GSA-TTS/agentic-coding-patterns/commit/aff5d631672a10748598f02380fb3670c0d1afee))
+
+
+### Bug Fixes
+
+* **ci:** authenticate Link Check to github.com to stop rate-limit false-positives ([#316](https://github.com/GSA-TTS/agentic-coding-patterns/issues/316)) ([#317](https://github.com/GSA-TTS/agentic-coding-patterns/issues/317)) ([e71209f](https://github.com/GSA-TTS/agentic-coding-patterns/commit/e71209f11aa0fa7f96a0a6aa33d823ba6ac47b03))
+* **ci:** ignore climbing relative links in Link Check (400 false positives) ([#309](https://github.com/GSA-TTS/agentic-coding-patterns/issues/309)) ([118825c](https://github.com/GSA-TTS/agentic-coding-patterns/commit/118825c06cf64de0a2cea2e4d97b027ccb535905))
+* **links:** repoint dead federal links to live official/GitHub sources ([#311](https://github.com/GSA-TTS/agentic-coding-patterns/issues/311)) ([a73f9c1](https://github.com/GSA-TTS/agentic-coding-patterns/commit/a73f9c1f882965b7f078351048fbb76df547be6a))
+
 ## [1.8.0](https://github.com/GSA-TTS/agentic-coding-patterns/compare/v1.7.0...v1.8.0) (2026-08-04)