diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 9e002e98..d7203492 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.72.0"
+  ".": "0.73.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a9a8689f..4f25d6e7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.73.0](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.72.0...v0.73.0) (2026-09-01)
+
+
+### Features
+
+* **deps:** update Claude SDK ([#1066](https://github.com/agentclientprotocol/claude-agent-acp/issues/1066)) ([b4e3aaa](https://github.com/agentclientprotocol/claude-agent-acp/commit/b4e3aaa727821a85cef6dcf51452381d35fd68a5))
+
 ## [0.72.0](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.71.0...v0.72.0) (2026-09-01)
 
 
diff --git a/package-lock.json b/package-lock.json
index 57e37496..d3ad16da 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@agentclientprotocol/claude-agent-acp",
-  "version": "0.72.0",
+  "version": "0.73.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@agentclientprotocol/claude-agent-acp",
-      "version": "0.72.0",
+      "version": "0.73.0",
       "license": "Apache-2.0",
       "dependencies": {
         "@agentclientprotocol/sdk": "1.4.0",
diff --git a/package.json b/package.json
index cff3152c..09937337 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "publishConfig": {
     "access": "public"
   },
-  "version": "0.72.0",
+  "version": "0.73.0",
   "description": "An ACP-compatible coding agent powered by the Claude Agent SDK (TypeScript)",
   "main": "dist/lib.js",
   "types": "dist/lib.d.ts",