diff --git a/pyproject.toml b/pyproject.toml
index 6c001ff9..b1ec77d9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -27,7 +27,7 @@ keywords = ["claude", "ai", "sdk", "anthropic"]
 dependencies = [
     "anyio>=4.0.0",
     "typing_extensions>=4.0.0; python_version<'3.11'",
-    "mcp>=0.1.0",
+    "mcp>=1.19.0",
 ]
 
 [project.optional-dependencies]