diff --git a/pyproject.toml b/pyproject.toml
index 9af5e1913..041eb0292 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -152,7 +152,7 @@ dev = [
     # Pin to exact version: codegen's variant numbering (e.g. CreateMediaBuyResponse1 vs
     # CreateMediaBuyResponse) shifts between versions, producing diff churn and breaking
     # generated-code imports that reference specific suffixes.
-    "datamodel-code-generator[http]==0.64.0",
+    "datamodel-code-generator[http]==0.81.0",
     # Runs Starlette app lifespan under httpx.ASGITransport in tests —
     # the canonical library for what httpx doesn't do natively. Used by
     # tests/test_mcp_middleware_composition.py and future integration
@@ -434,7 +434,7 @@ skips = ["B101"]  # Allow assert in code (we're not using -O optimization)
 
 [dependency-groups]
 dev = [
-    "datamodel-code-generator==0.64.0",
+    "datamodel-code-generator==0.81.0",
     "pre-commit>=4.4.0",
     "types-protobuf>=7.34.1.20260408",
     # Pinned in the dev group so ``uv run mypy`` (used by the pre-commit
diff --git a/scripts/ci/reporting_interop/python/requirements-py310-pydantic2130-mcp200.txt b/scripts/ci/reporting_interop/python/requirements-py310-pydantic2130-mcp200.txt
index cac4efc6f..453212502 100644
--- a/scripts/ci/reporting_interop/python/requirements-py310-pydantic2130-mcp200.txt
+++ b/scripts/ci/reporting_interop/python/requirements-py310-pydantic2130-mcp200.txt
@@ -27,7 +27,7 @@ idna==3.20
 json-rpc==1.15.0
 jsonschema==4.26.0
 jsonschema-specifications==2025.9.1
-mcp==2.0.0
+mcp==2.2.0
 mcp-types==2.0.0
 opentelemetry-api==1.44.0
 packaging==26.3