diff --git a/cookbook/langgraph-email-agent/pyproject.toml b/cookbook/langgraph-email-agent/pyproject.toml
index 580d5fd..90412e0 100644
--- a/cookbook/langgraph-email-agent/pyproject.toml
+++ b/cookbook/langgraph-email-agent/pyproject.toml
@@ -5,8 +5,8 @@ description = "Standalone LangGraph email assistant with a SimLab BaseAgent adap
 readme = "langgraph-email-agent.md"
 requires-python = ">=3.13"
 dependencies = [
-    "langchain-core>=0.3.0",
-    "langchain-openai>=0.3.0",
+    "langchain-core>=1.3.3",
+    "langchain-openai>=1.1.14",
     "langgraph>=0.3.0",
     "pydantic>=2.0",
     "simulationlab",
@@ -24,7 +24,7 @@ simulationlab = { path = "../..", editable = true }
 
 [dependency-groups]
 dev = [
-    "pytest>=9.0.3",
+    "pytest>=9.1.1",
 ]
 
 [tool.pytest.ini_options]
diff --git a/cookbook/langgraph-email-agent/uv.lock b/cookbook/langgraph-email-agent/uv.lock
index 8336bd5..1f72aa5 100644
--- a/cookbook/langgraph-email-agent/uv.lock
+++ b/cookbook/langgraph-email-agent/uv.lock
@@ -699,10 +699,11 @@ wheels = [
 
 [[package]]
 name = "langchain-core"
-version = "1.2.21"
+version = "1.3.3"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "jsonpatch" },
+    { name = "langchain-protocol" },
     { name = "langsmith" },
     { name = "packaging" },
     { name = "pydantic" },
@@ -711,23 +712,35 @@ dependencies = [
     { name = "typing-extensions" },
     { name = "uuid-utils" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/8b/e4/135ef5bbb5b97bdf15f777b86d7fba2ef8a162723ae96b3c7c1add9891a9/langchain_core-1.2.21.tar.gz", hash = "sha256:1a121d13976dc0908d5a8222262810ea483a4cf2b05006bdba75df5b11b554b3", size = 841063, upload-time = "2026-03-23T18:01:01.674Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/d3/ae/8b74458fc3850ec3d150eb9f45e857db129dafa801fb5cf173dfc9f8bbf3/langchain_core-1.3.3.tar.gz", hash = "sha256:fa510a5db8efdc0c6ff41c0939fb5c00a0183c11f6b84233e892e3227ff69182", size = 915041, upload-time = "2026-05-05T19:02:36.612Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/5d/ae/f7591e57d4c6b64b521f9832fc471070902718c59bf135401f3b90a3f7ef/langchain_core-1.2.21-py3-none-any.whl", hash = "sha256:486cb405e2ecb0c407cb5fb5379ed0f919eb4b8a868b60cc8c3c15a3dfb560a7", size = 505756, upload-time = "2026-03-23T18:01:00.176Z" },
+    { url = "https://files.pythonhosted.org/packages/1f/01/4771b7ab2af1d1aba5b710bd8f13d9225c609425214b357590a17b01be77/langchain_core-1.3.3-py3-none-any.whl", hash = "sha256:18aae8506f37da7f74398492279a7d6efcee4f8e23c4c41c7af080eeb7ef7bd1", size = 543857, upload-time = "2026-05-05T19:02:34.52Z" },
 ]
 
 [[package]]
 name = "langchain-openai"
-version = "1.1.11"
+version = "1.1.14"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "langchain-core" },
     { name = "openai" },
     { name = "tiktoken" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/40/cd/439be2b8deb8bd0d4c470c7c7f66698a84d823e583c3d36a322483cb7cab/langchain_openai-1.1.11.tar.gz", hash = "sha256:44b003a2960d1f6699f23721196b3b97d0c420d2e04444950869213214b7a06a", size = 1088560, upload-time = "2026-03-09T23:02:36.894Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/8e/f5/b1a56f703fb90952b07ff9fb5507123a39df1267d62a7f2bb821c5dbb628/langchain_openai-1.1.14.tar.gz", hash = "sha256:71b4262932fabe506ce79c175dbc956cc48f24d81e20b27662df493147750643", size = 1115195, upload-time = "2026-04-16T14:55:24.696Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/f0/0f/e4cb42848c25f65969adfb500a06dea1a541831604250fd0d8aa6e54fef5/langchain_openai-1.1.11-py3-none-any.whl", hash = "sha256:a03596221405d38d6852fb865467cb0d9ff9e79f335905eb6a576e8c4874ac71", size = 87694, upload-time = "2026-03-09T23:02:35.651Z" },
+    { url = "https://files.pythonhosted.org/packages/0b/fa/8c33befbc0cf81b21371cc1dab4e7bf94a80b8116194f263a5021ec02529/langchain_openai-1.1.14-py3-none-any.whl", hash = "sha256:cb525d2011f9813fc15a7dcfd4bca5b87badcbcb2c113a7fbe45d1b8a1bbb69c", size = 88705, upload-time = "2026-04-16T14:55:23.159Z" },
+]
+
+[[package]]
+name = "langchain-protocol"
+version = "0.0.18"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "typing-extensions" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/d2/59/b5959aea96faa9146e2e49a7a22882b3528c62efafe9a6a95beab30c2305/langchain_protocol-0.0.18.tar.gz", hash = "sha256:ec3e11782f1ed0c9db38e5a9ed01b0e7a0d3fba406faa8aef6594b73c56a63e6", size = 6150, upload-time = "2026-06-18T17:08:26.959Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/99/2e/d82db9eec13ad0f72e7aaad5c4bc730ab111934fdc83c85523206eb9b0a0/langchain_protocol-0.0.18-py3-none-any.whl", hash = "sha256:70b53a86fbf9cedc863555effe44da192ab02d556ddbf2cf95b8873adcf41b5a", size = 7221, upload-time = "2026-06-18T17:08:25.996Z" },
 ]
 
 [[package]]
@@ -779,15 +792,15 @@ dev = [
 
 [package.metadata]
 requires-dist = [
-    { name = "langchain-core", specifier = ">=0.3.0" },
-    { name = "langchain-openai", specifier = ">=0.3.0" },
+    { name = "langchain-core", specifier = ">=1.3.3" },
+    { name = "langchain-openai", specifier = ">=1.1.14" },
     { name = "langgraph", specifier = ">=0.3.0" },
     { name = "pydantic", specifier = ">=2.0" },
     { name = "simulationlab", editable = "../../" },
 ]
 
 [package.metadata.requires-dev]
-dev = [{ name = "pytest", specifier = ">=9.0.3" }]
+dev = [{ name = "pytest", specifier = ">=9.1.1" }]
 
 [[package]]
 name = "langgraph-prebuilt"
@@ -838,7 +851,7 @@ wheels = [
 
 [[package]]
 name = "litellm"
-version = "1.84.0"
+version = "1.89.4"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "aiohttp" },
@@ -854,9 +867,9 @@ dependencies = [
     { name = "tiktoken" },
     { name = "tokenizers" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/dd/e9/8941b7e72a187000561d932c0f2f2ed2b0fd080dfc33ba6e05961d45ca7d/litellm-1.84.0.tar.gz", hash = "sha256:b8ad0cbea11a5941b18d5af973017a340abd3d3ab41cb86e5401b970626d71a6", size = 15103206, upload-time = "2026-05-14T05:45:53.017Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/71/e1/ce008da0be1515b025f1b008d0664e3d2b2ffdbece2913d71baefc9887f4/litellm-1.89.4.tar.gz", hash = "sha256:ab551a8d52cb703c738b4db7cb6f350c4bb2ff146f0d3cc3986fd879a1eecac5", size = 14061816, upload-time = "2026-06-25T02:35:40.674Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/01/a6/77fa1bbf5e42eb596b06318b3f7e6af5d0f44028046d1d598c6a595d028f/litellm-1.84.0-py3-none-any.whl", hash = "sha256:2a58d6041e6aa27d1a28dc8d8828ab500fef1a00ef74ca65e60899035010c2f2", size = 16735062, upload-time = "2026-05-14T05:45:49.927Z" },
+    { url = "https://files.pythonhosted.org/packages/b8/cc/6fc72581a3ad22b7a53e8dddcc4ccc3ac679795d2200629f0fab35cb6d34/litellm-1.89.4-py3-none-any.whl", hash = "sha256:c3a19961b9e3576d4aafb6d27a0a8e1d06c370784b2d88631a9ba0d027cfd757", size = 15472272, upload-time = "2026-06-25T02:35:37.523Z" },
 ]
 
 [[package]]
@@ -1340,7 +1353,7 @@ crypto = [
 
 [[package]]
 name = "pytest"
-version = "9.0.3"
+version = "9.1.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "colorama", marker = "sys_platform == 'win32'" },
@@ -1349,9 +1362,9 @@ dependencies = [
     { name = "pluggy" },
     { name = "pygments" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/7d/0d/549bd94f1a0a402dc8cf64563a117c0f3765662e2e668477624baeec44d5/pytest-9.0.3.tar.gz", hash = "sha256:b86ada508af81d19edeb213c681b1d48246c1a91d304c6c81a427674c17eb91c", size = 1572165, upload-time = "2026-04-07T17:16:18.027Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/e4/47/b9efed96c114afcfa3c9d3fe98a76a1d14c74a9e266d397cf6eb64be5e01/pytest-9.1.1.tar.gz", hash = "sha256:1088fbde8f2b49d95a549a195707afa7a76a3ce9bcadc26b6d71f0ffda5fe313", size = 1636369, upload-time = "2026-06-19T10:58:32.857Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/d4/24/a372aaf5c9b7208e7112038812994107bc65a84cd00e0354a88c2c77a617/pytest-9.0.3-py3-none-any.whl", hash = "sha256:2c5efc453d45394fdd706ade797c0a81091eccd1d6e4bccfcd476e2b8e0ab5d9", size = 375249, upload-time = "2026-04-07T17:16:16.13Z" },
+    { url = "https://files.pythonhosted.org/packages/24/25/1de2678b631f5a49215c6c96fff41ba892b0a34df68d6d80292b1b48aa7f/pytest-9.1.1-py3-none-any.whl", hash = "sha256:37a86b45efb9a47a61a36449063e8e18d0cab3161329fc099eb21783169c4f0c", size = 386536, upload-time = "2026-06-19T10:58:31.347Z" },
 ]
 
 [[package]]
@@ -1520,7 +1533,7 @@ wheels = [
 
 [[package]]
 name = "requests"
-version = "2.32.5"
+version = "2.33.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "certifi" },
@@ -1528,9 +1541,9 @@ dependencies = [
     { name = "idna" },
     { name = "urllib3" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/c9/74/b3ff8e6c8446842c3f5c837e9c3dfcfe2018ea6ecef224c710c85ef728f4/requests-2.32.5.tar.gz", hash = "sha256:dbba0bac56e100853db0ea71b82b4dfd5fe2bf6d3754a8893c3af500cec7d7cf", size = 134517, upload-time = "2025-08-18T20:46:02.573Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/34/64/8860370b167a9721e8956ae116825caff829224fbca0ca6e7bf8ddef8430/requests-2.33.0.tar.gz", hash = "sha256:c7ebc5e8b0f21837386ad0e1c8fe8b829fa5f544d8df3b2253bff14ef29d7652", size = 134232, upload-time = "2026-03-25T15:10:41.586Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/1e/db/4254e3eabe8020b458f1a747140d32277ec7a271daf1d235b70dc0b4e6e3/requests-2.32.5-py3-none-any.whl", hash = "sha256:2462f94637a34fd532264295e186976db0f5d453d1cdd31473c85a6a161affb6", size = 64738, upload-time = "2025-08-18T20:46:00.542Z" },
+    { url = "https://files.pythonhosted.org/packages/56/5d/c814546c2333ceea4ba42262d8c4d55763003e767fa169adc693bd524478/requests-2.33.0-py3-none-any.whl", hash = "sha256:3324635456fa185245e24865e810cecec7b4caf933d7eb133dcde67d48cee69b", size = 65017, upload-time = "2026-03-25T15:10:40.382Z" },
 ]
 
 [[package]]
@@ -1659,7 +1672,7 @@ requires-dist = [
     { name = "google-adk", marker = "extra == 'google-adk'", specifier = ">=1.28.0" },
     { name = "langchain-core", marker = "extra == 'langchain'", specifier = ">=0.3.0" },
     { name = "langgraph", marker = "extra == 'langchain'", specifier = ">=0.3.0" },
-    { name = "litellm", specifier = "==1.84.0" },
+    { name = "litellm", specifier = "==1.89.4" },
     { name = "mcp", specifier = ">=1.0.0" },
     { name = "openai", specifier = ">=1.0.0" },
     { name = "openai-agents", marker = "extra == 'openai-agents'", specifier = ">=0.9.0" },
diff --git a/cookbook/langgraph-vendor-agent/pyproject.toml b/cookbook/langgraph-vendor-agent/pyproject.toml
index ef1cede..1b22dd5 100644
--- a/cookbook/langgraph-vendor-agent/pyproject.toml
+++ b/cookbook/langgraph-vendor-agent/pyproject.toml
@@ -5,8 +5,8 @@ description = "Plan-and-execute LangGraph agent for vendor management with SimLa
 readme = "README.md"
 requires-python = ">=3.13"
 dependencies = [
-    "langchain-core>=0.3.0",
-    "langchain-openai>=0.3.0",
+    "langchain-core>=1.3.3",
+    "langchain-openai>=1.1.14",
     "langgraph>=0.3.0",
     "pydantic>=2.0",
     "simulationlab",
@@ -24,7 +24,7 @@ simulationlab = { path = "../..", editable = true }
 
 [dependency-groups]
 dev = [
-    "pytest>=9.0.3",
+    "pytest>=9.1.1",
 ]
 
 [tool.pytest.ini_options]
diff --git a/cookbook/langgraph-vendor-agent/uv.lock b/cookbook/langgraph-vendor-agent/uv.lock
index 1d76c17..76c7b00 100644
--- a/cookbook/langgraph-vendor-agent/uv.lock
+++ b/cookbook/langgraph-vendor-agent/uv.lock
@@ -699,10 +699,11 @@ wheels = [
 
 [[package]]
 name = "langchain-core"
-version = "1.2.22"
+version = "1.3.3"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "jsonpatch" },
+    { name = "langchain-protocol" },
     { name = "langsmith" },
     { name = "packaging" },
     { name = "pydantic" },
@@ -711,23 +712,35 @@ dependencies = [
     { name = "typing-extensions" },
     { name = "uuid-utils" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/b1/a3/c4cd6827a1df46c821e7214b7f7b7a28b189e6c9b84ef15c6d629c5e3179/langchain_core-1.2.22.tar.gz", hash = "sha256:8d8f726d03d3652d403da915126626bb6250747e8ba406537d849e68b9f5d058", size = 842487, upload-time = "2026-03-24T18:48:44.9Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/d3/ae/8b74458fc3850ec3d150eb9f45e857db129dafa801fb5cf173dfc9f8bbf3/langchain_core-1.3.3.tar.gz", hash = "sha256:fa510a5db8efdc0c6ff41c0939fb5c00a0183c11f6b84233e892e3227ff69182", size = 915041, upload-time = "2026-05-05T19:02:36.612Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/c7/a6/2ffacf0f1a3788f250e75d0b52a24896c413be11be3a6d42bcdf46fbea48/langchain_core-1.2.22-py3-none-any.whl", hash = "sha256:7e30d586b75918e828833b9ec1efc25465723566845dd652c277baf751e9c04b", size = 506829, upload-time = "2026-03-24T18:48:43.286Z" },
+    { url = "https://files.pythonhosted.org/packages/1f/01/4771b7ab2af1d1aba5b710bd8f13d9225c609425214b357590a17b01be77/langchain_core-1.3.3-py3-none-any.whl", hash = "sha256:18aae8506f37da7f74398492279a7d6efcee4f8e23c4c41c7af080eeb7ef7bd1", size = 543857, upload-time = "2026-05-05T19:02:34.52Z" },
 ]
 
 [[package]]
 name = "langchain-openai"
-version = "1.1.12"
+version = "1.1.14"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "langchain-core" },
     { name = "openai" },
     { name = "tiktoken" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/cc/fd/7dee16e882c4c1577d48db174d85aa3a0ee09ba61eb6a5d41650285ca80c/langchain_openai-1.1.12.tar.gz", hash = "sha256:ccf5ef02c896f6807b4d0e51aaf678a72ce81ae41201cae8d65e11eeff9ecb79", size = 1114119, upload-time = "2026-03-23T18:59:19.211Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/8e/f5/b1a56f703fb90952b07ff9fb5507123a39df1267d62a7f2bb821c5dbb628/langchain_openai-1.1.14.tar.gz", hash = "sha256:71b4262932fabe506ce79c175dbc956cc48f24d81e20b27662df493147750643", size = 1115195, upload-time = "2026-04-16T14:55:24.696Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/6e/a6/68fb22e3604015e6f546fa1d3677d24378b482855ae74710cbf4aec44132/langchain_openai-1.1.12-py3-none-any.whl", hash = "sha256:da71ca3f2d18c16f7a2443cc306aa195ad2a07054335ac9b0626dcae02b6a0c5", size = 88487, upload-time = "2026-03-23T18:59:17.978Z" },
+    { url = "https://files.pythonhosted.org/packages/0b/fa/8c33befbc0cf81b21371cc1dab4e7bf94a80b8116194f263a5021ec02529/langchain_openai-1.1.14-py3-none-any.whl", hash = "sha256:cb525d2011f9813fc15a7dcfd4bca5b87badcbcb2c113a7fbe45d1b8a1bbb69c", size = 88705, upload-time = "2026-04-16T14:55:23.159Z" },
+]
+
+[[package]]
+name = "langchain-protocol"
+version = "0.0.18"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "typing-extensions" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/d2/59/b5959aea96faa9146e2e49a7a22882b3528c62efafe9a6a95beab30c2305/langchain_protocol-0.0.18.tar.gz", hash = "sha256:ec3e11782f1ed0c9db38e5a9ed01b0e7a0d3fba406faa8aef6594b73c56a63e6", size = 6150, upload-time = "2026-06-18T17:08:26.959Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/99/2e/d82db9eec13ad0f72e7aaad5c4bc730ab111934fdc83c85523206eb9b0a0/langchain_protocol-0.0.18-py3-none-any.whl", hash = "sha256:70b53a86fbf9cedc863555effe44da192ab02d556ddbf2cf95b8873adcf41b5a", size = 7221, upload-time = "2026-06-18T17:08:25.996Z" },
 ]
 
 [[package]]
@@ -805,15 +818,15 @@ dev = [
 
 [package.metadata]
 requires-dist = [
-    { name = "langchain-core", specifier = ">=0.3.0" },
-    { name = "langchain-openai", specifier = ">=0.3.0" },
+    { name = "langchain-core", specifier = ">=1.3.3" },
+    { name = "langchain-openai", specifier = ">=1.1.14" },
     { name = "langgraph", specifier = ">=0.3.0" },
     { name = "pydantic", specifier = ">=2.0" },
     { name = "simulationlab", editable = "../../" },
 ]
 
 [package.metadata.requires-dev]
-dev = [{ name = "pytest", specifier = ">=9.0.3" }]
+dev = [{ name = "pytest", specifier = ">=9.1.1" }]
 
 [[package]]
 name = "langsmith"
@@ -838,7 +851,7 @@ wheels = [
 
 [[package]]
 name = "litellm"
-version = "1.84.0"
+version = "1.89.4"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "aiohttp" },
@@ -854,9 +867,9 @@ dependencies = [
     { name = "tiktoken" },
     { name = "tokenizers" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/dd/e9/8941b7e72a187000561d932c0f2f2ed2b0fd080dfc33ba6e05961d45ca7d/litellm-1.84.0.tar.gz", hash = "sha256:b8ad0cbea11a5941b18d5af973017a340abd3d3ab41cb86e5401b970626d71a6", size = 15103206, upload-time = "2026-05-14T05:45:53.017Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/71/e1/ce008da0be1515b025f1b008d0664e3d2b2ffdbece2913d71baefc9887f4/litellm-1.89.4.tar.gz", hash = "sha256:ab551a8d52cb703c738b4db7cb6f350c4bb2ff146f0d3cc3986fd879a1eecac5", size = 14061816, upload-time = "2026-06-25T02:35:40.674Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/01/a6/77fa1bbf5e42eb596b06318b3f7e6af5d0f44028046d1d598c6a595d028f/litellm-1.84.0-py3-none-any.whl", hash = "sha256:2a58d6041e6aa27d1a28dc8d8828ab500fef1a00ef74ca65e60899035010c2f2", size = 16735062, upload-time = "2026-05-14T05:45:49.927Z" },
+    { url = "https://files.pythonhosted.org/packages/b8/cc/6fc72581a3ad22b7a53e8dddcc4ccc3ac679795d2200629f0fab35cb6d34/litellm-1.89.4-py3-none-any.whl", hash = "sha256:c3a19961b9e3576d4aafb6d27a0a8e1d06c370784b2d88631a9ba0d027cfd757", size = 15472272, upload-time = "2026-06-25T02:35:37.523Z" },
 ]
 
 [[package]]
@@ -1340,7 +1353,7 @@ crypto = [
 
 [[package]]
 name = "pytest"
-version = "9.0.3"
+version = "9.1.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "colorama", marker = "sys_platform == 'win32'" },
@@ -1349,9 +1362,9 @@ dependencies = [
     { name = "pluggy" },
     { name = "pygments" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/7d/0d/549bd94f1a0a402dc8cf64563a117c0f3765662e2e668477624baeec44d5/pytest-9.0.3.tar.gz", hash = "sha256:b86ada508af81d19edeb213c681b1d48246c1a91d304c6c81a427674c17eb91c", size = 1572165, upload-time = "2026-04-07T17:16:18.027Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/e4/47/b9efed96c114afcfa3c9d3fe98a76a1d14c74a9e266d397cf6eb64be5e01/pytest-9.1.1.tar.gz", hash = "sha256:1088fbde8f2b49d95a549a195707afa7a76a3ce9bcadc26b6d71f0ffda5fe313", size = 1636369, upload-time = "2026-06-19T10:58:32.857Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/d4/24/a372aaf5c9b7208e7112038812994107bc65a84cd00e0354a88c2c77a617/pytest-9.0.3-py3-none-any.whl", hash = "sha256:2c5efc453d45394fdd706ade797c0a81091eccd1d6e4bccfcd476e2b8e0ab5d9", size = 375249, upload-time = "2026-04-07T17:16:16.13Z" },
+    { url = "https://files.pythonhosted.org/packages/24/25/1de2678b631f5a49215c6c96fff41ba892b0a34df68d6d80292b1b48aa7f/pytest-9.1.1-py3-none-any.whl", hash = "sha256:37a86b45efb9a47a61a36449063e8e18d0cab3161329fc099eb21783169c4f0c", size = 386536, upload-time = "2026-06-19T10:58:31.347Z" },
 ]
 
 [[package]]
@@ -1520,7 +1533,7 @@ wheels = [
 
 [[package]]
 name = "requests"
-version = "2.33.0"
+version = "2.34.2"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "certifi" },
@@ -1528,9 +1541,9 @@ dependencies = [
     { name = "idna" },
     { name = "urllib3" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/34/64/8860370b167a9721e8956ae116825caff829224fbca0ca6e7bf8ddef8430/requests-2.33.0.tar.gz", hash = "sha256:c7ebc5e8b0f21837386ad0e1c8fe8b829fa5f544d8df3b2253bff14ef29d7652", size = 134232, upload-time = "2026-03-25T15:10:41.586Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/ac/c3/e2a2b89f2d3e2179abd6d00ebd70bff6273f37fb3e0cc209f48b39d00cbf/requests-2.34.2.tar.gz", hash = "sha256:f288924cae4e29463698d6d60bc6a4da69c89185ad1e0bcc4104f584e960b9ed", size = 142856, upload-time = "2026-05-14T19:25:27.735Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/56/5d/c814546c2333ceea4ba42262d8c4d55763003e767fa169adc693bd524478/requests-2.33.0-py3-none-any.whl", hash = "sha256:3324635456fa185245e24865e810cecec7b4caf933d7eb133dcde67d48cee69b", size = 65017, upload-time = "2026-03-25T15:10:40.382Z" },
+    { url = "https://files.pythonhosted.org/packages/a0/f4/c67b0b3f1b9245e8d266f0f112c500d50e5b4e83cb6f3b71b6528104182a/requests-2.34.2-py3-none-any.whl", hash = "sha256:2a0d60c172f83ac6ab31e4554906c0f3b3588d37b5cb939b1c061f4907e278e0", size = 73075, upload-time = "2026-05-14T19:25:26.443Z" },
 ]
 
 [[package]]
@@ -1659,7 +1672,7 @@ requires-dist = [
     { name = "google-adk", marker = "extra == 'google-adk'", specifier = ">=1.28.0" },
     { name = "langchain-core", marker = "extra == 'langchain'", specifier = ">=0.3.0" },
     { name = "langgraph", marker = "extra == 'langchain'", specifier = ">=0.3.0" },
-    { name = "litellm", specifier = "==1.84.0" },
+    { name = "litellm", specifier = "==1.89.4" },
     { name = "mcp", specifier = ">=1.0.0" },
     { name = "openai", specifier = ">=1.0.0" },
     { name = "openai-agents", marker = "extra == 'openai-agents'", specifier = ">=0.9.0" },
diff --git a/cookbook/openai-agents-sdk/pyproject.toml b/cookbook/openai-agents-sdk/pyproject.toml
index eaac566..d009b76 100644
--- a/cookbook/openai-agents-sdk/pyproject.toml
+++ b/cookbook/openai-agents-sdk/pyproject.toml
@@ -21,7 +21,7 @@ simulationlab = { path = "../..", editable = true }
 
 [dependency-groups]
 dev = [
-    "pytest>=9.0.3",
+    "pytest>=9.1.1",
 ]
 
 [tool.pytest.ini_options]
diff --git a/cookbook/openai-agents-sdk/uv.lock b/cookbook/openai-agents-sdk/uv.lock
index 02d53de..f95dd82 100644
--- a/cookbook/openai-agents-sdk/uv.lock
+++ b/cookbook/openai-agents-sdk/uv.lock
@@ -690,7 +690,7 @@ wheels = [
 
 [[package]]
 name = "litellm"
-version = "1.84.0"
+version = "1.89.4"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "aiohttp" },
@@ -706,9 +706,9 @@ dependencies = [
     { name = "tiktoken" },
     { name = "tokenizers" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/dd/e9/8941b7e72a187000561d932c0f2f2ed2b0fd080dfc33ba6e05961d45ca7d/litellm-1.84.0.tar.gz", hash = "sha256:b8ad0cbea11a5941b18d5af973017a340abd3d3ab41cb86e5401b970626d71a6", size = 15103206, upload-time = "2026-05-14T05:45:53.017Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/71/e1/ce008da0be1515b025f1b008d0664e3d2b2ffdbece2913d71baefc9887f4/litellm-1.89.4.tar.gz", hash = "sha256:ab551a8d52cb703c738b4db7cb6f350c4bb2ff146f0d3cc3986fd879a1eecac5", size = 14061816, upload-time = "2026-06-25T02:35:40.674Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/01/a6/77fa1bbf5e42eb596b06318b3f7e6af5d0f44028046d1d598c6a595d028f/litellm-1.84.0-py3-none-any.whl", hash = "sha256:2a58d6041e6aa27d1a28dc8d8828ab500fef1a00ef74ca65e60899035010c2f2", size = 16735062, upload-time = "2026-05-14T05:45:49.927Z" },
+    { url = "https://files.pythonhosted.org/packages/b8/cc/6fc72581a3ad22b7a53e8dddcc4ccc3ac679795d2200629f0fab35cb6d34/litellm-1.89.4-py3-none-any.whl", hash = "sha256:c3a19961b9e3576d4aafb6d27a0a8e1d06c370784b2d88631a9ba0d027cfd757", size = 15472272, upload-time = "2026-06-25T02:35:37.523Z" },
 ]
 
 [[package]]
@@ -948,7 +948,7 @@ requires-dist = [
 ]
 
 [package.metadata.requires-dev]
-dev = [{ name = "pytest", specifier = ">=9.0.3" }]
+dev = [{ name = "pytest", specifier = ">=9.1.1" }]
 
 [[package]]
 name = "packaging"
@@ -1165,7 +1165,7 @@ crypto = [
 
 [[package]]
 name = "pytest"
-version = "9.0.3"
+version = "9.1.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "colorama", marker = "sys_platform == 'win32'" },
@@ -1174,9 +1174,9 @@ dependencies = [
     { name = "pluggy" },
     { name = "pygments" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/7d/0d/549bd94f1a0a402dc8cf64563a117c0f3765662e2e668477624baeec44d5/pytest-9.0.3.tar.gz", hash = "sha256:b86ada508af81d19edeb213c681b1d48246c1a91d304c6c81a427674c17eb91c", size = 1572165, upload-time = "2026-04-07T17:16:18.027Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/e4/47/b9efed96c114afcfa3c9d3fe98a76a1d14c74a9e266d397cf6eb64be5e01/pytest-9.1.1.tar.gz", hash = "sha256:1088fbde8f2b49d95a549a195707afa7a76a3ce9bcadc26b6d71f0ffda5fe313", size = 1636369, upload-time = "2026-06-19T10:58:32.857Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/d4/24/a372aaf5c9b7208e7112038812994107bc65a84cd00e0354a88c2c77a617/pytest-9.0.3-py3-none-any.whl", hash = "sha256:2c5efc453d45394fdd706ade797c0a81091eccd1d6e4bccfcd476e2b8e0ab5d9", size = 375249, upload-time = "2026-04-07T17:16:16.13Z" },
+    { url = "https://files.pythonhosted.org/packages/24/25/1de2678b631f5a49215c6c96fff41ba892b0a34df68d6d80292b1b48aa7f/pytest-9.1.1-py3-none-any.whl", hash = "sha256:37a86b45efb9a47a61a36449063e8e18d0cab3161329fc099eb21783169c4f0c", size = 386536, upload-time = "2026-06-19T10:58:31.347Z" },
 ]
 
 [[package]]
@@ -1345,7 +1345,7 @@ wheels = [
 
 [[package]]
 name = "requests"
-version = "2.33.0"
+version = "2.34.2"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "certifi" },
@@ -1353,9 +1353,9 @@ dependencies = [
     { name = "idna" },
     { name = "urllib3" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/34/64/8860370b167a9721e8956ae116825caff829224fbca0ca6e7bf8ddef8430/requests-2.33.0.tar.gz", hash = "sha256:c7ebc5e8b0f21837386ad0e1c8fe8b829fa5f544d8df3b2253bff14ef29d7652", size = 134232, upload-time = "2026-03-25T15:10:41.586Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/ac/c3/e2a2b89f2d3e2179abd6d00ebd70bff6273f37fb3e0cc209f48b39d00cbf/requests-2.34.2.tar.gz", hash = "sha256:f288924cae4e29463698d6d60bc6a4da69c89185ad1e0bcc4104f584e960b9ed", size = 142856, upload-time = "2026-05-14T19:25:27.735Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/56/5d/c814546c2333ceea4ba42262d8c4d55763003e767fa169adc693bd524478/requests-2.33.0-py3-none-any.whl", hash = "sha256:3324635456fa185245e24865e810cecec7b4caf933d7eb133dcde67d48cee69b", size = 65017, upload-time = "2026-03-25T15:10:40.382Z" },
+    { url = "https://files.pythonhosted.org/packages/a0/f4/c67b0b3f1b9245e8d266f0f112c500d50e5b4e83cb6f3b71b6528104182a/requests-2.34.2-py3-none-any.whl", hash = "sha256:2a0d60c172f83ac6ab31e4554906c0f3b3588d37b5cb939b1c061f4907e278e0", size = 73075, upload-time = "2026-05-14T19:25:26.443Z" },
 ]
 
 [[package]]
@@ -1470,9 +1470,9 @@ requires-dist = [
     { name = "daytona", marker = "extra == 'daytona'", specifier = ">=0.149.0" },
     { name = "fastapi", marker = "extra == 'npc'", specifier = ">=0.100.0" },
     { name = "google-adk", marker = "extra == 'google-adk'", specifier = ">=1.28.0" },
-    { name = "langchain-core", marker = "extra == 'langchain'", specifier = ">=0.3.0" },
+    { name = "langchain-core", marker = "extra == 'langchain'", specifier = ">=1.4.8" },
     { name = "langgraph", marker = "extra == 'langchain'", specifier = ">=0.3.0" },
-    { name = "litellm", specifier = "==1.84.0" },
+    { name = "litellm", specifier = "==1.89.4" },
     { name = "mcp", specifier = ">=1.0.0" },
     { name = "openai", specifier = ">=1.0.0" },
     { name = "openai-agents", marker = "extra == 'openai-agents'", specifier = ">=0.9.0" },
diff --git a/cookbook/simlab-auto-research/pyproject.toml b/cookbook/simlab-auto-research/pyproject.toml
index ce24a3e..db33205 100644
--- a/cookbook/simlab-auto-research/pyproject.toml
+++ b/cookbook/simlab-auto-research/pyproject.toml
@@ -20,7 +20,7 @@ simulationlab = { path = "../..", editable = true }
 
 [dependency-groups]
 dev = [
-    "pytest>=9.0.3",
+    "pytest>=9.1.1",
 ]
 
 [tool.pytest.ini_options]
diff --git a/cookbook/simlab-auto-research/uv.lock b/cookbook/simlab-auto-research/uv.lock
index 6399ee1..cfe30f3 100644
--- a/cookbook/simlab-auto-research/uv.lock
+++ b/cookbook/simlab-auto-research/uv.lock
@@ -816,7 +816,7 @@ wheels = [
 
 [[package]]
 name = "litellm"
-version = "1.84.0"
+version = "1.89.4"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "aiohttp" },
@@ -832,9 +832,9 @@ dependencies = [
     { name = "tiktoken" },
     { name = "tokenizers" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/dd/e9/8941b7e72a187000561d932c0f2f2ed2b0fd080dfc33ba6e05961d45ca7d/litellm-1.84.0.tar.gz", hash = "sha256:b8ad0cbea11a5941b18d5af973017a340abd3d3ab41cb86e5401b970626d71a6", size = 15103206, upload-time = "2026-05-14T05:45:53.017Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/71/e1/ce008da0be1515b025f1b008d0664e3d2b2ffdbece2913d71baefc9887f4/litellm-1.89.4.tar.gz", hash = "sha256:ab551a8d52cb703c738b4db7cb6f350c4bb2ff146f0d3cc3986fd879a1eecac5", size = 14061816, upload-time = "2026-06-25T02:35:40.674Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/01/a6/77fa1bbf5e42eb596b06318b3f7e6af5d0f44028046d1d598c6a595d028f/litellm-1.84.0-py3-none-any.whl", hash = "sha256:2a58d6041e6aa27d1a28dc8d8828ab500fef1a00ef74ca65e60899035010c2f2", size = 16735062, upload-time = "2026-05-14T05:45:49.927Z" },
+    { url = "https://files.pythonhosted.org/packages/b8/cc/6fc72581a3ad22b7a53e8dddcc4ccc3ac679795d2200629f0fab35cb6d34/litellm-1.89.4-py3-none-any.whl", hash = "sha256:c3a19961b9e3576d4aafb6d27a0a8e1d06c370784b2d88631a9ba0d027cfd757", size = 15472272, upload-time = "2026-06-25T02:35:37.523Z" },
 ]
 
 [[package]]
@@ -1420,7 +1420,7 @@ crypto = [
 
 [[package]]
 name = "pytest"
-version = "9.0.3"
+version = "9.1.1"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "colorama", marker = "sys_platform == 'win32'" },
@@ -1429,9 +1429,9 @@ dependencies = [
     { name = "pluggy" },
     { name = "pygments" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/7d/0d/549bd94f1a0a402dc8cf64563a117c0f3765662e2e668477624baeec44d5/pytest-9.0.3.tar.gz", hash = "sha256:b86ada508af81d19edeb213c681b1d48246c1a91d304c6c81a427674c17eb91c", size = 1572165, upload-time = "2026-04-07T17:16:18.027Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/e4/47/b9efed96c114afcfa3c9d3fe98a76a1d14c74a9e266d397cf6eb64be5e01/pytest-9.1.1.tar.gz", hash = "sha256:1088fbde8f2b49d95a549a195707afa7a76a3ce9bcadc26b6d71f0ffda5fe313", size = 1636369, upload-time = "2026-06-19T10:58:32.857Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/d4/24/a372aaf5c9b7208e7112038812994107bc65a84cd00e0354a88c2c77a617/pytest-9.0.3-py3-none-any.whl", hash = "sha256:2c5efc453d45394fdd706ade797c0a81091eccd1d6e4bccfcd476e2b8e0ab5d9", size = 375249, upload-time = "2026-04-07T17:16:16.13Z" },
+    { url = "https://files.pythonhosted.org/packages/24/25/1de2678b631f5a49215c6c96fff41ba892b0a34df68d6d80292b1b48aa7f/pytest-9.1.1-py3-none-any.whl", hash = "sha256:37a86b45efb9a47a61a36449063e8e18d0cab3161329fc099eb21783169c4f0c", size = 386536, upload-time = "2026-06-19T10:58:31.347Z" },
 ]
 
 [[package]]
@@ -1612,7 +1612,7 @@ wheels = [
 
 [[package]]
 name = "requests"
-version = "2.33.0"
+version = "2.34.2"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "certifi" },
@@ -1620,9 +1620,9 @@ dependencies = [
     { name = "idna" },
     { name = "urllib3" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/34/64/8860370b167a9721e8956ae116825caff829224fbca0ca6e7bf8ddef8430/requests-2.33.0.tar.gz", hash = "sha256:c7ebc5e8b0f21837386ad0e1c8fe8b829fa5f544d8df3b2253bff14ef29d7652", size = 134232, upload-time = "2026-03-25T15:10:41.586Z" }
+sdist = { url = "https://files.pythonhosted.org/packages/ac/c3/e2a2b89f2d3e2179abd6d00ebd70bff6273f37fb3e0cc209f48b39d00cbf/requests-2.34.2.tar.gz", hash = "sha256:f288924cae4e29463698d6d60bc6a4da69c89185ad1e0bcc4104f584e960b9ed", size = 142856, upload-time = "2026-05-14T19:25:27.735Z" }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/56/5d/c814546c2333ceea4ba42262d8c4d55763003e767fa169adc693bd524478/requests-2.33.0-py3-none-any.whl", hash = "sha256:3324635456fa185245e24865e810cecec7b4caf933d7eb133dcde67d48cee69b", size = 65017, upload-time = "2026-03-25T15:10:40.382Z" },
+    { url = "https://files.pythonhosted.org/packages/a0/f4/c67b0b3f1b9245e8d266f0f112c500d50e5b4e83cb6f3b71b6528104182a/requests-2.34.2-py3-none-any.whl", hash = "sha256:2a0d60c172f83ac6ab31e4554906c0f3b3588d37b5cb939b1c061f4907e278e0", size = 73075, upload-time = "2026-05-14T19:25:26.443Z" },
 ]
 
 [[package]]
@@ -1730,7 +1730,7 @@ dev = [
 requires-dist = [{ name = "simulationlab", extras = ["daytona"], editable = "../../" }]
 
 [package.metadata.requires-dev]
-dev = [{ name = "pytest", specifier = ">=9.0.3" }]
+dev = [{ name = "pytest", specifier = ">=9.1.1" }]
 
 [[package]]
 name = "simulationlab"
@@ -1761,9 +1761,9 @@ requires-dist = [
     { name = "daytona", marker = "extra == 'daytona'", specifier = ">=0.149.0" },
     { name = "fastapi", marker = "extra == 'npc'", specifier = ">=0.100.0" },
     { name = "google-adk", marker = "extra == 'google-adk'", specifier = ">=1.28.0" },
-    { name = "langchain-core", marker = "extra == 'langchain'", specifier = ">=0.3.0" },
+    { name = "langchain-core", marker = "extra == 'langchain'", specifier = ">=1.4.8" },
     { name = "langgraph", marker = "extra == 'langchain'", specifier = ">=0.3.0" },
-    { name = "litellm", specifier = "==1.84.0" },
+    { name = "litellm", specifier = "==1.89.4" },
     { name = "mcp", specifier = ">=1.0.0" },
     { name = "openai", specifier = ">=1.0.0" },
     { name = "openai-agents", marker = "extra == 'openai-agents'", specifier = ">=0.9.0" },