diff --git a/packages/host/agent-adapter/package.json b/packages/host/agent-adapter/package.json
index 2e69f9ea9..0fd837a92 100644
--- a/packages/host/agent-adapter/package.json
+++ b/packages/host/agent-adapter/package.json
@@ -13,7 +13,7 @@
   },
   "dependencies": {
     "@anthropic-ai/claude-agent-sdk": "^0.3.215",
-    "@anthropic-ai/sdk": "^0.115.0",
+    "@anthropic-ai/sdk": "^0.120.0",
     "@linkcode/common": "workspace:*",
     "@linkcode/schema": "workspace:*",
     "@linkcode/transport": "workspace:*",
diff --git a/pnpm-lock.yaml b/pnpm-lock.yaml
index c9726975f..a3d59dd84 100644
--- a/pnpm-lock.yaml
+++ b/pnpm-lock.yaml
@@ -984,10 +984,10 @@ importers:
     dependencies:
       '@anthropic-ai/claude-agent-sdk':
         specifier: ^0.3.215
-        version: 0.3.215(@anthropic-ai/sdk@0.115.0(zod@4.4.3))(@modelcontextprotocol/sdk@1.30.0(supports-color@8.1.1)(zod@4.4.3))(zod@4.4.3)
+        version: 0.3.215(@anthropic-ai/sdk@0.120.0(zod@4.4.3))(@modelcontextprotocol/sdk@1.30.0(supports-color@8.1.1)(zod@4.4.3))(zod@4.4.3)
       '@anthropic-ai/sdk':
-        specifier: ^0.115.0
-        version: 0.115.0(zod@4.4.3)
+        specifier: ^0.120.0
+        version: 0.120.0(zod@4.4.3)
       '@linkcode/common':
         specifier: workspace:*
         version: link:../../foundation/common
@@ -1456,8 +1456,8 @@ packages:
       '@modelcontextprotocol/sdk': ^1.29.0
       zod: ^4.0.0
 
-  '@anthropic-ai/sdk@0.115.0':
-    resolution: {integrity: sha512-BJrFIVyjNuU8lfDyIJTvlRYzgQg+zEl78BxE7fq8esULsGz9IRQvGtW5spq3tydmtjQb/GFdooKGdGsetpx+lQ==}
+  '@anthropic-ai/sdk@0.120.0':
+    resolution: {integrity: sha512-ZlvmNFT/iIF6JD13rxbbMWD8nvGR0RaUp6yMQnoc+4Af0YjVVe/bIdW1XSQQsoxXAtg1NaT6Vak0LKFlJ4d37Q==}
     hasBin: true
     peerDependencies:
       zod: ^3.25.0 || ^4.0.0
@@ -11536,9 +11536,9 @@ snapshots:
   '@anthropic-ai/claude-agent-sdk-win32-x64@0.3.215':
     optional: true
 
-  '@anthropic-ai/claude-agent-sdk@0.3.215(@anthropic-ai/sdk@0.115.0(zod@4.4.3))(@modelcontextprotocol/sdk@1.30.0(supports-color@8.1.1)(zod@4.4.3))(zod@4.4.3)':
+  '@anthropic-ai/claude-agent-sdk@0.3.215(@anthropic-ai/sdk@0.120.0(zod@4.4.3))(@modelcontextprotocol/sdk@1.30.0(supports-color@8.1.1)(zod@4.4.3))(zod@4.4.3)':
     dependencies:
-      '@anthropic-ai/sdk': 0.115.0(zod@4.4.3)
+      '@anthropic-ai/sdk': 0.120.0(zod@4.4.3)
       '@modelcontextprotocol/sdk': 1.30.0(supports-color@8.1.1)(zod@4.4.3)
       zod: 4.4.3
     optionalDependencies:
@@ -11551,7 +11551,7 @@ snapshots:
       '@anthropic-ai/claude-agent-sdk-win32-arm64': 0.3.215
       '@anthropic-ai/claude-agent-sdk-win32-x64': 0.3.215
 
-  '@anthropic-ai/sdk@0.115.0(zod@4.4.3)':
+  '@anthropic-ai/sdk@0.120.0(zod@4.4.3)':
     dependencies:
       json-schema-to-ts: 3.1.1
       standardwebhooks: 1.0.0