diff --git a/a2a.yaml b/a2a.yaml
index 7f5e4e0..bb48acc 100644
--- a/a2a.yaml
+++ b/a2a.yaml
@@ -1,5 +1,5 @@
 name: agent-builder
-version: 0.1.0
+version: 0.1.1
 entrypoint: agent:AgentBuilder
 description: Generate, test, and deploy new a2a agents from natural language.
 expose:
diff --git a/agent.py b/agent.py
index 1e10bd9..cc14d20 100644
--- a/agent.py
+++ b/agent.py
@@ -47,7 +47,7 @@ class AgentBuilder(A2AAgent[BuilderConfig, NoAuth]):
         "Writes the project into the user's workspace, validates it in a "
         "sandbox, then ships it via the control plane."
     )
-    version = "0.1.0"
+    version = "0.1.1"
 
     config_model = BuilderConfig
     auth_model = NoAuth
@@ -256,4 +256,4 @@ def _find_url(value: Any) -> str | None:
         m = _URL_RE.search(value)
         return m.group(0) if m else None
     return None
-# rebuild against fresh a2a-pack-base 2026-05-16T20:29:04Z (a2a-pack 0.1.3)
+# rebuild against a2a-pack 0.1.16 for nullable LLM extra_body handling
diff --git a/requirements.txt b/requirements.txt
index 484c811..cbba95d 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -1,4 +1,4 @@
-a2a-pack>=0.1.15
+a2a-pack>=0.1.16
 httpx>=0.27
 boto3>=1.34
 deepagents>=0.5.0