diff --git a/src/claude_agent_sdk/types.py b/src/claude_agent_sdk/types.py
index 81e19ac5..304949e6 100644
--- a/src/claude_agent_sdk/types.py
+++ b/src/claude_agent_sdk/types.py
@@ -6,7 +6,12 @@
 from pathlib import Path
 from typing import TYPE_CHECKING, Any, Literal, TypedDict
 
-from typing_extensions import NotRequired
+try:
+    # Python >= 3.11
+    from typing import NotRequired
+except ImportError:
+    # Python < 3.11
+    from typing_extensions import NotRequired
 
 if TYPE_CHECKING:
     from mcp.server import Server as McpServer