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
index a1f6c9c..20db2dd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,19 @@
 # Changelog
 
+## [1.2.0](https://github.com/agentclientprotocol/typescript-sdk/compare/v1.1.0...v1.2.0) (2026-07-06)
+
+
+### Features
+
+* Update schema to 1.17.0 ([#204](https://github.com/agentclientprotocol/typescript-sdk/issues/204)) ([fa8b5bd](https://github.com/agentclientprotocol/typescript-sdk/commit/fa8b5bd426fec07a85203d6a6e4b83d173243cf1))
+* Update schema to 1.19.0 ([#213](https://github.com/agentclientprotocol/typescript-sdk/issues/213)) ([6599433](https://github.com/agentclientprotocol/typescript-sdk/commit/6599433640feb8e36372a767554869fd5097fdd3))
+
+
+### Bug Fixes
+
+* make ndJsonStream receive path linear in message size ([#210](https://github.com/agentclientprotocol/typescript-sdk/issues/210)) ([2fc41d2](https://github.com/agentclientprotocol/typescript-sdk/commit/2fc41d2822579f754042db4d4f8c53b7c9b9ad2f))
+* unify JSON-RPC message validation policy across transports ([#212](https://github.com/agentclientprotocol/typescript-sdk/issues/212)) ([5e01eb2](https://github.com/agentclientprotocol/typescript-sdk/commit/5e01eb2ac2cd72c8c6ebff1015874366c781eaa5)), closes [#211](https://github.com/agentclientprotocol/typescript-sdk/issues/211)
+
 ## [1.1.0](https://github.com/agentclientprotocol/typescript-sdk/compare/v1.0.0...v1.1.0) (2026-06-29)
 
 
diff --git a/package-lock.json b/package-lock.json
index 32da4e1..bc93863 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@agentclientprotocol/sdk",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@agentclientprotocol/sdk",
-      "version": "1.1.0",
+      "version": "1.2.0",
       "license": "Apache-2.0",
       "devDependencies": {
         "@eslint/js": "^10.0.1",
diff --git a/package.json b/package.json
index 92f25c7..0a54e00 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@agentclientprotocol/sdk",
-  "version": "1.1.0",
+  "version": "1.2.0",
   "publishConfig": {
     "access": "public"
   },