diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 37fcefa..5fdd883 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.0.0"
+  ".": "1.1.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f25dbf6..10ec8fd 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.1.0](https://github.com/aibtcdev/tx-schemas/compare/tx-schemas-v1.0.0...tx-schemas-v1.1.0) (2026-04-23)
+
+
+### Features
+
+* **rpc:** add optional paymentIdentifier to RpcSubmitPaymentArgsSchema for V2 parity ([#29](https://github.com/aibtcdev/tx-schemas/issues/29)) ([159ad69](https://github.com/aibtcdev/tx-schemas/commit/159ad69c2019bf847aa8ec7f2f48c31c33182f0a))
+
 ## [1.0.0](https://github.com/aibtcdev/tx-schemas/compare/tx-schemas-v0.8.0...tx-schemas-v1.0.0) (2026-04-15)
 
 
diff --git a/package-lock.json b/package-lock.json
index eb199d4..1ad15d8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@aibtc/tx-schemas",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@aibtc/tx-schemas",
-      "version": "1.0.0",
+      "version": "1.1.0",
       "license": "MIT",
       "dependencies": {
         "zod": "^4.3.6"
diff --git a/package.json b/package.json
index 5784909..f5f8f59 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@aibtc/tx-schemas",
-  "version": "1.0.0",
+  "version": "1.1.0",
   "description": "Shared zod schemas for AIBTC transaction states, relay RPC/HTTP schemas, and news editorial domain schemas.",
   "type": "module",
   "sideEffects": false,