diff --git a/package.json b/package.json
index 70425764..b1b8f6f7 100644
--- a/package.json
+++ b/package.json
@@ -76,7 +76,7 @@
     "@agentclientprotocol/sdk": "^0.22.1",
     "commander": "^14.0.3",
     "skillflag": "^0.1.4",
-    "tsx": "^4.22.0",
+    "tsx": "^4.21.0",
     "zod": "^4.4.3"
   },
   "devDependencies": {
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index bcc11093..d8248ce8 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -18,7 +18,7 @@ importers:
         specifier: ^0.1.4
         version: 0.1.4
       tsx:
-        specifier: ^4.22.0
+        specifier: ^4.21.0
         version: 4.22.3
       zod:
         specifier: ^4.4.3
diff --git a/src/agent-registry.ts b/src/agent-registry.ts
index f67b3895..8eb251bd 100644
--- a/src/agent-registry.ts
+++ b/src/agent-registry.ts
@@ -5,7 +5,7 @@ import { fileURLToPath } from "node:url";
 const ACP_ADAPTER_PACKAGE_RANGES = {
   pi: "^0.0.26",
   codex: "^0.0.44",
-  claude: "^0.36.1",
+  claude: "^0.33.1",
 } as const;
 
 type BuiltInAgentPackageSpec = {