diff --git a/CHANGELOG.md b/CHANGELOG.md
index c591528..47eaa85 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,25 @@
 # Changelog
 
+## 1.0.0 (2026-02-17)
+
+
+### ⚠ BREAKING CHANGES
+
+* modernize SDK to v2.0.0 — Faraday 2.x, Ruby 3.4, full API coverage
+
+### Features
+
+* modernize SDK to v2.0.0 — Faraday 2.x, Ruby 3.4, full API coverage ([5941c14](https://github.com/warmlyyours/shipengine_rb/commit/5941c1417a8a60983ab99b4b53c7609eb916f303))
+
+
+### Bug Fixes
+
+* [SE-119] Get SDK build working and First Gem published :truck: ([dbba243](https://github.com/warmlyyours/shipengine_rb/commit/dbba243460e85fbe5b644078a933ca36c5f2c57d))
+* change default timeout to 60s ([81bfe73](https://github.com/warmlyyours/shipengine_rb/commit/81bfe73feb0abc8a87aedb15e9b3935dd33d4da9))
+* fixup CD ([fcb16ad](https://github.com/warmlyyours/shipengine_rb/commit/fcb16ada4628dbb330f3c33f0f5ba58bcfe4d8ed))
+* Update publish to Gem API Key ([3f9c8e5](https://github.com/warmlyyours/shipengine_rb/commit/3f9c8e5eec8147e2fb1b38a114fa0e2ff24a5f9e))
+* Update versioning and prune failed attempts from git ([5eb0f22](https://github.com/warmlyyours/shipengine_rb/commit/5eb0f227b8466f61ce3f8df3edef6cab5779dbd1))
+
 ## 0.1.0 - Initial Release
 
 First release of `shipengine_rb`, an independent Ruby SDK for the ShipEngine API.