diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 957c388e..ca03ce26 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "0.64.2"
+  ".": "0.64.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 49e497ba..5e9d9684 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,12 +1,5 @@
 # Changelog
 
-## [0.64.2](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.64.1...v0.64.2) (2026-08-02)
-
-
-### Bug Fixes
-
-* restore the single-tool representation for ExitPlanMode ([#942](https://github.com/agentclientprotocol/claude-agent-acp/issues/942)) ([4302a4b](https://github.com/agentclientprotocol/claude-agent-acp/commit/4302a4b0b6df821b164cbe4857f26cf5b44b532c))
-
 ## [0.64.1](https://github.com/agentclientprotocol/claude-agent-acp/compare/v0.64.0...v0.64.1) (2026-08-02)
 
 
diff --git a/package-lock.json b/package-lock.json
index a905054b..846da9d0 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@agentclientprotocol/claude-agent-acp",
-  "version": "0.64.2",
+  "version": "0.64.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@agentclientprotocol/claude-agent-acp",
-      "version": "0.64.2",
+      "version": "0.64.1",
       "license": "Apache-2.0",
       "dependencies": {
         "@agentclientprotocol/sdk": "1.3.0",
diff --git a/package.json b/package.json
index 62693c63..0beb3ffe 100644
--- a/package.json
+++ b/package.json
@@ -3,7 +3,7 @@
   "publishConfig": {
     "access": "public"
   },
-  "version": "0.64.2",
+  "version": "0.64.1",
   "description": "An ACP-compatible coding agent powered by the Claude Agent SDK (TypeScript)",
   "main": "dist/lib.js",
   "types": "dist/lib.d.ts",