diff --git a/pyproject.toml b/pyproject.toml
index db7a72a..0c4f6d6 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ requires-python = "==3.13.*"
 dependencies = [
     "fastmcp>=3.2.4",
     "debugpy>=1.8.0",
-    "langchain-core>=1.2.26",
+    "langchain-core>=1.3.3",
     "mcp>=1.3.0",
     "azure-identity>=1.25.1",
     "msgraph-sdk>=1.0.0",
diff --git a/uv.lock b/uv.lock
index 920d817..c6fe1a4 100644
--- a/uv.lock
+++ b/uv.lock
@@ -938,10 +938,11 @@ wheels = [
 
 [[package]]
 name = "langchain-core"
-version = "1.2.26"
+version = "1.3.3"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "jsonpatch" },
+    { name = "langchain-protocol" },
     { name = "langsmith" },
     { name = "packaging" },
     { name = "pydantic" },
@@ -950,9 +951,9 @@ dependencies = [
     { name = "typing-extensions" },
     { name = "uuid-utils" },
 ]
-sdist = { url = "https://files.pythonhosted.org/packages/8c/b0/30ed29e5820580bc13d70b1f8a212b4fe0609a9737164ed1a90167941ca2/langchain_core-1.2.26.tar.gz", hash = "sha256:ba025ec70e19b56467f46b9109de19d30d169d328a174986b353cb23fd0ff0fe", size = 844795, upload-time = "2026-04-03T23:30:32.567Z" }
+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/e5/8b/c184205a52b37a4a3166b3567323495701929b1dbfd528e5ba1df62bd404/langchain_core-1.2.26-py3-none-any.whl", hash = "sha256:3d0a3913dff77a930b017a05afe979e4959d27bec0c77ee51f9a100754510509", size = 508298, upload-time = "2026-04-03T23:30:30.253Z" },
+    { 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]]
@@ -983,6 +984,18 @@ 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" },
 ]
 
+[[package]]
+name = "langchain-protocol"
+version = "0.0.15"
+source = { registry = "https://pypi.org/simple" }
+dependencies = [
+    { name = "typing-extensions" },
+]
+sdist = { url = "https://files.pythonhosted.org/packages/4f/24/9777489d6fbbee64af0c8f96d4f840239c408cf694f3394672807dafc490/langchain_protocol-0.0.15.tar.gz", hash = "sha256:9ab2d11ee73944754f10e037e717098d3a6796f0e58afa9cadda6154e7655ade", size = 5862, upload-time = "2026-05-01T22:30:04.748Z" }
+wheels = [
+    { url = "https://files.pythonhosted.org/packages/1d/7a/9c97a7b9cbe4c5dc6a44cdb1545450c28f0c8ce89b9c1f0ee7fbad896263/langchain_protocol-0.0.15-py3-none-any.whl", hash = "sha256:461eb794358f83d5e42635a5797799ffec7b4702314e34edf73ac21e75d3ef79", size = 6982, upload-time = "2026-05-01T22:30:03.877Z" },
+]
+
 [[package]]
 name = "langgraph"
 version = "1.1.6"
@@ -2049,7 +2062,7 @@ requires-dist = [
     { name = "dotenv-azd", specifier = ">=0.1.0" },
     { name = "fastmcp", specifier = ">=3.2.4" },
     { name = "langchain", specifier = ">=1.2.15" },
-    { name = "langchain-core", specifier = ">=1.2.26" },
+    { name = "langchain-core", specifier = ">=1.3.3" },
     { name = "langchain-mcp-adapters", specifier = ">=0.2.2" },
     { name = "langchain-openai", specifier = ">=1.1.12" },
     { name = "logfire", specifier = ">=4.15.1" },