diff --git a/packages/adapters/claude-local/package.json b/packages/adapters/claude-local/package.json
index fedbab8a09..8c83a2f4a2 100644
--- a/packages/adapters/claude-local/package.json
+++ b/packages/adapters/claude-local/package.json
@@ -53,7 +53,7 @@
     "probe:quota:raw": "pnpm exec tsx src/cli/quota-probe.ts --json --raw-cli"
   },
   "dependencies": {
-    "@agentclientprotocol/claude-agent-acp": "^0.63.0",
+    "@agentclientprotocol/claude-agent-acp": "^0.66.0",
     "@paperclipai/adapter-utils": "workspace:*",
     "picocolors": "^1.1.1"
   },
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index f8af987f92..d0daba03ed 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -139,8 +139,8 @@ importers:
   packages/adapters/claude-local:
     dependencies:
       '@agentclientprotocol/claude-agent-acp':
-        specifier: ^0.63.0
-        version: 0.63.0(@anthropic-ai/sdk@0.81.0(zod@3.25.76))(@modelcontextprotocol/sdk@1.29.0(zod@3.25.76))
+        specifier: ^0.66.0
+        version: 0.66.0(@anthropic-ai/sdk@0.81.0(zod@3.25.76))(@modelcontextprotocol/sdk@1.29.0(zod@3.25.76))
       '@paperclipai/adapter-utils':
         specifier: workspace:*
         version: link:../../adapter-utils
@@ -1048,8 +1048,8 @@ packages:
   '@adobe/css-tools@4.5.0':
     resolution: {integrity: sha512-6OzddxPio9UiWTCemp4N8cYLV2ZN1ncRnV1cVGtve7dhPOtRkleRyx32GQCYSwDYgaHU3USMm84tNsvKzRCa1Q==}
 
-  '@agentclientprotocol/claude-agent-acp@0.63.0':
-    resolution: {integrity: sha512-/Ylytz6KPGkih1sZd2sJAmWIGMh59T+FCJhlsfW9zpB1Lrg0/Njgk/7TplRfX2f7dELx0FeN+SBG+Uju12XwlA==}
+  '@agentclientprotocol/claude-agent-acp@0.66.0':
+    resolution: {integrity: sha512-BwalxKsxZzHZGEs+X9hV3biErLE7PHWoao2hmyP3QBWXxvMHbc1F1tzDE95ZA47Fle+KBYf2gKpgy1MJ+ZmVlw==}
     engines: {node: '>=22'}
     hasBin: true
 
@@ -8861,7 +8861,7 @@ snapshots:
 
   '@adobe/css-tools@4.5.0': {}
 
-  '@agentclientprotocol/claude-agent-acp@0.63.0(@anthropic-ai/sdk@0.81.0(zod@3.25.76))(@modelcontextprotocol/sdk@1.29.0(zod@3.25.76))':
+  '@agentclientprotocol/claude-agent-acp@0.66.0(@anthropic-ai/sdk@0.81.0(zod@3.25.76))(@modelcontextprotocol/sdk@1.29.0(zod@3.25.76))':
     dependencies:
       '@agentclientprotocol/sdk': 1.3.0(zod@3.25.76)
       '@anthropic-ai/claude-agent-sdk': 0.3.220(@anthropic-ai/sdk@0.81.0(zod@3.25.76))(@modelcontextprotocol/sdk@1.29.0(zod@3.25.76))(zod@3.25.76)