diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 5fdd883..c3f1463 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.1.0"
+  ".": "1.2.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
new file mode 100644
index 0000000..746a023
--- /dev/null
+++ b/CHANGELOG.md
@@ -0,0 +1,18 @@
+# Changelog
+
+## [1.2.0](https://github.com/aharshac/EasyNTPClient/compare/1.1.0...v1.2.0) (2026-05-10)
+
+
+### Features
+
+* Add agent guide ([d66ccd4](https://github.com/aharshac/EasyNTPClient/commit/d66ccd467c150831e0c3d50cfa99e060da58a8e9))
+* add comprehensive multi-platform test suite ([#15](https://github.com/aharshac/EasyNTPClient/issues/15)) ([4436452](https://github.com/aharshac/EasyNTPClient/commit/4436452bb7bfd32791360ad37bed7df696261e71))
+* runtime-configurable update interval and NTP server switching ([#14](https://github.com/aharshac/EasyNTPClient/issues/14)) ([8ce01f3](https://github.com/aharshac/EasyNTPClient/commit/8ce01f35140de5ad206bd23be1112c9f10ae74ee))
+* Update readme ([54d4c72](https://github.com/aharshac/EasyNTPClient/commit/54d4c7250d661d75b4f20ed9aee2e6cc630496ce))
+
+
+### Bug Fixes
+
+* add NTP constants, change mUpdateInterval type ([#11](https://github.com/aharshac/EasyNTPClient/issues/11)) ([802fdd8](https://github.com/aharshac/EasyNTPClient/commit/802fdd8da93945051ea9209e4d4a4c848acffebc))
+* NTP packet correctness and UDP socket lifecycle ([#12](https://github.com/aharshac/EasyNTPClient/issues/12)) ([34d8145](https://github.com/aharshac/EasyNTPClient/commit/34d81454c13322a1e45da7e35a5d1ea6a3df7337))
+* time offset decoupling and sync resilience ([#13](https://github.com/aharshac/EasyNTPClient/issues/13)) ([0c75a27](https://github.com/aharshac/EasyNTPClient/commit/0c75a2734d0d10259f37511c755c5d8a0f418e2d))
diff --git a/library.json b/library.json
index fa74d1e..9c59ea7 100644
--- a/library.json
+++ b/library.json
@@ -6,7 +6,7 @@
     "type": "git",
     "url": "https://github.com/aharshac/EasyNTPClient"
   },
-  "version": "1.1.0",
+  "version": "1.2.0",
   "authors": {
     "name": "Harsha Alva",
     "url": "https://alvaharsha.me"
diff --git a/library.properties b/library.properties
index c9bc373..1a91c65 100644
--- a/library.properties
+++ b/library.properties
@@ -1,6 +1,6 @@
 name=EasyNTPClient
 # x-release-please-start-version
-version=1.1.0
+version=1.2.0
 # x-release-please-end
 author=Harsha Alva
 maintainer=Harsha Alva <aharshac@gmail.com>