diff --git a/ipykernel/debugger.py b/ipykernel/debugger.py
index e3da33ca9..0828509c0 100644
--- a/ipykernel/debugger.py
+++ b/ipykernel/debugger.py
@@ -462,6 +462,8 @@ async def attach(self, message):
             'port': port
         }
         message['arguments']['logToFile'] = True
+        # Set debugOptions for breakpoints in python standard library source.
+        message['arguments']['debugOptions'] = [ 'DebugStdLib' ]
         return await self._forward_message(message)
 
     async def configurationDone(self, message):