diff --git a/a2a/a2a_contact_extractor/pyproject.toml b/a2a/a2a_contact_extractor/pyproject.toml
index 8f5ffe0b..7bebdade 100644
--- a/a2a/a2a_contact_extractor/pyproject.toml
+++ b/a2a/a2a_contact_extractor/pyproject.toml
@@ -6,7 +6,7 @@ readme = "README.md"
 requires-python = ">=3.12"
 dependencies = [
     "marvin>=3.2.0",  # 3.0.x/3.1.x incompatible with pydantic-ai>=1.56
-    "a2a-sdk[http-server]>=1.1.0,<2",
+    "a2a-sdk[http-server]>=1.1.1,<2",
     "urllib3>=2.7.0",   # Indirect; prevents CVE-2025-66418
     "python-multipart>=0.0.32", # Indirect; prevents CVE-2026-24486
     "starlette>=1.3.1",        # Indirect; prevents CVE-2025-62727
diff --git a/a2a/a2a_contact_extractor/uv.lock b/a2a/a2a_contact_extractor/uv.lock
index 764e5631..bc96e388 100644
--- a/a2a/a2a_contact_extractor/uv.lock
+++ b/a2a/a2a_contact_extractor/uv.lock
@@ -31,7 +31,7 @@ dependencies = [
 
 [package.metadata]
 requires-dist = [
-    { name = "a2a-sdk", extras = ["http-server"], specifier = ">=1.1.0,<2" },
+    { name = "a2a-sdk", extras = ["http-server"], specifier = ">=1.1.1,<2" },
     { name = "aiohttp", specifier = ">=3.14.1" },
     { name = "anthropic", specifier = ">=0.116.0" },
     { name = "fastmcp", specifier = ">=3.4.4" },
@@ -48,22 +48,21 @@ requires-dist = [
 
 [[package]]
 name = "a2a-sdk"
-version = "1.1.0"
+version = "1.1.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "culsans", marker = "python_full_version < '3.13'" },
     { name = "google-api-core" },
     { name = "googleapis-common-protos" },
     { name = "httpx" },
-    { name = "httpx-sse" },
     { name = "json-rpc" },
     { name = "packaging" },
     { name = "protobuf" },
     { name = "pydantic" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/c7/7e/8ac10bbf8b15b16574355f39b17dbdf617a282c27b41c7ff2116e30336df/a2a_sdk-1.1.0.tar.gz", hash = "sha256:e8102dad1b36709dbdc3d19319e38e6dfa3b3a79c30416030eb2d482576be204", size = 375726, upload-time = "2026-05-29T09:34:43.015Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/d4/1d/5214ce0a1932a986002b2d22f457d260376e7f91134f978f58a214b5ad88/a2a_sdk-1.1.1.tar.gz", hash = "sha256:1662462d1d0efef697917c59ffdef543248a1ffa9ea0f7c8403d087f4958e28b", size = 377552, upload-time = "2026-07-16T13:29:58.911Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/d4/ea/3a5b160cfd51c67759b08748051094d9365ceff18127633d0021950c9860/a2a_sdk-1.1.0-py3-none-any.whl", hash = "sha256:d7f5846caf18033d8bf3108b11ec827dd8dd32f867c98848ede0e39474be93be", size = 241886, upload-time = "2026-05-29T09:34:41.484Z" },
+    { url = "https://files.pythonhosted.org/packages/cd/91/ab2ba19dea0771f7d5503f80e2f756f8f7195acd0e91d55e8ea893bf626f/a2a_sdk-1.1.1-py3-none-any.whl", hash = "sha256:60608eb77d62ae962795cf0bcb06f24be8470b4bf97adbc4ed32f170e9f40c3e", size = 244090, upload-time = "2026-07-16T13:29:57.387Z" },
 ]
 
 [package.optional-dependencies]