diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 6fef4e56..5f70a1ff 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.31.2"
+  ".": "0.31.3"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 75172edb..da822b63 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [0.31.3](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.31.2...v0.31.3) (2026-04-28)
+
+
+### Bug Fixes
+
+* Rename effort config category to thought_level ([#609](https://github.com/agentclientprotocol/claude-agent-acp/issues/609)) ([76b4e96](https://github.com/agentclientprotocol/claude-agent-acp/commit/76b4e9650832e59a6b4915ad898fc66a065022fa))
+
 ## [0.31.2](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.31.1...v0.31.2) (2026-04-28)
 
 
diff --git a/package-lock.json b/package-lock.json
index d4492b0f..f96c77b2 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@agentclientprotocol/claude-agent-acp",
-  "version": "0.31.2",
+  "version": "0.31.3",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@agentclientprotocol/claude-agent-acp",
-      "version": "0.31.2",
+      "version": "0.31.3",
       "license": "Apache-2.0",
       "dependencies": {
         "@agentclientprotocol/sdk": "0.21.0",
diff --git a/package.json b/package.json
index 206be1a1..419d82e2 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "publishConfig": {
     "access": "public"
   },
-  "version": "0.31.2",
+  "version": "0.31.3",
   "description": "An ACP-compatible coding agent powered by the Claude Agent SDK (TypeScript)",
   "main": "dist/lib.js",
   "types": "dist/lib.d.ts",