diff --git a/pyproject.toml b/pyproject.toml
index 6232fea..b8d908a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,7 +22,7 @@ dependencies = [
     # LangGraph for agent orchestration (Constitution: State)
     "langgraph>=0.2.0,<2.0.0",
     "langchain-core>=0.3.0,<2.0.0",
-    "langchain-openai>=0.2.0,<2.0.0",
+    "langchain-openai>=1.1.14,<2.0.0",
     # OpenAI for LLM (Research Decision #6)
     "openai>=1.50.0,<3.0.0",
     # FastAPI for HTTP API (Research Decision #8)
diff --git a/uv.lock b/uv.lock
index ab0b364..73b5b40 100644
--- a/uv.lock
+++ b/uv.lock
@@ -104,7 +104,7 @@ requires-dist = [
     { name = "jsonschema", specifier = ">=4.20.0,<5.0.0" },
     { name = "langchain-core", specifier = ">=0.3.0,<2.0.0" },
     { name = "langchain-google-genai", specifier = ">=4.2.0,<5.0.0" },
-    { name = "langchain-openai", specifier = ">=0.2.0,<2.0.0" },
+    { name = "langchain-openai", specifier = ">=1.1.14,<2.0.0" },
     { name = "langgraph", specifier = ">=0.2.0,<2.0.0" },
     { name = "mlflow", specifier = ">=3.5.0,<4.0.0" },
     { name = "openai", specifier = ">=1.50.0,<3.0.0" },
@@ -1613,7 +1613,7 @@ wheels = [
 
 [[package]]
 name = "langchain-core"
-version = "1.2.11"
+version = "1.2.31"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "jsonpatch" },
@@ -1625,9 +1625,9 @@ dependencies = [
     { name = "typing-extensions" },
     { name = "uuid-utils" },
 ]
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 [[package]]
@@ -1647,16 +1647,16 @@ wheels = [
 
 [[package]]
 name = "langchain-openai"
-version = "1.1.7"
+version = "1.1.14"
 source = { registry = "https://pypi.org/simple" }
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     { name = "openai" },
     { name = "tiktoken" },
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 [[package]]
@@ -2200,7 +2200,7 @@ wheels = [
 
 [[package]]
 name = "openai"
-version = "2.16.0"
+version = "2.32.0"
 source = { registry = "https://pypi.org/simple" }
 dependencies = [
     { name = "anyio" },
@@ -2212,9 +2212,9 @@ dependencies = [
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     { name = "typing-extensions" },
 ]
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 [[package]]