diff --git a/Lib/copy.py b/Lib/copy.py
index 2646350..789488c 100644
--- a/Lib/copy.py
+++ b/Lib/copy.py
@@ -238,6 +238,10 @@
 if PyStringMap is not None:
     d[PyStringMap] = _deepcopy_dict
 
+def _deepcopy_method(x, memo): # Copy instance methods
+    return type(x)(x.__func__, deepcopy(x.__self__, memo))
+_deepcopy_dispatch[types.MethodType] = _deepcopy_method
+
 def _keep_alive(x, memo):
     """Keeps a reference to the object x in the memo.