Have md5 raise a DeprecationWarning as per PEP 4.
diff --git a/Lib/uuid.py b/Lib/uuid.py
index ae3da25..eb12d78 100644
--- a/Lib/uuid.py
+++ b/Lib/uuid.py
@@ -506,8 +506,8 @@
 
 def uuid3(namespace, name):
     """Generate a UUID from the MD5 hash of a namespace UUID and a name."""
-    import md5
-    hash = md5.md5(namespace.bytes + name).digest()
+    from hashlib import md5
+    hash = md5(namespace.bytes + name).digest()
     return UUID(bytes=hash[:16], version=3)
 
 def uuid4():