diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 418b49e9..65078153 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.39.0"
+  ".": "0.40.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index cc88c742..3517b629 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.40.0](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.39.0...v0.40.0) (2026-05-29)
+
+
+### Features
+
+* **deps-dev:** bump the minor group with 2 updates ([#726](https://github.com/agentclientprotocol/claude-agent-acp/issues/726)) ([51a370e](https://github.com/agentclientprotocol/claude-agent-acp/commit/51a370e4feb8a74279698b156e35b96631a74d74))
+
 ## [0.39.0](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.38.0...v0.39.0) (2026-05-29)
 
 
diff --git a/package-lock.json b/package-lock.json
index 58327048..63c25eb2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@agentclientprotocol/claude-agent-acp",
-  "version": "0.39.0",
+  "version": "0.40.0",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@agentclientprotocol/claude-agent-acp",
-      "version": "0.39.0",
+      "version": "0.40.0",
       "license": "Apache-2.0",
       "dependencies": {
         "@agentclientprotocol/sdk": "0.22.1",
diff --git a/package.json b/package.json
index b2538888..1369ec30 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "publishConfig": {
     "access": "public"
   },
-  "version": "0.39.0",
+  "version": "0.40.0",
   "description": "An ACP-compatible coding agent powered by the Claude Agent SDK (TypeScript)",
   "main": "dist/lib.js",
   "types": "dist/lib.d.ts",