diff --git a/pyproject.toml b/pyproject.toml
index ffa8bbd..3f70577 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -31,12 +31,12 @@ dependencies = [
     "prompt_toolkit>=3.0.52",
     "httpx>=0.28.1",
     "fastapi>=0.136.3",
-    "uvicorn>=0.48.0",
-    "python-multipart>=0.0.29",
+    "uvicorn>=0.49.0",
+    "python-multipart>=0.0.32",
     "jinja2>=3.1.6",
     # v2 / Milestone 2c: Ed25519 signatures for lineage_share grants.
     # Also provides Argon2id KDF for the web UI password store.
-    "cryptography>=48.0.0",
+    "cryptography>=49.0.0",
 ]
 
 [project.optional-dependencies]
@@ -55,7 +55,7 @@ test = [
     "pytest-asyncio>=1.4.0",
 ]
 mcp = [
-    "mcp>=1.0.0",
+    "mcp>=1.27.2",
 ]
 
 [project.scripts]