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diff --git a/dns/namedict.py b/dns/namedict.py
index 37a1310..7d52668 100644
--- a/dns/namedict.py
+++ b/dns/namedict.py
@@ -32,7 +32,7 @@ import dns.name
 from ._compat import xrange
 
 
-class NameDict(collections.MutableMapping):
+class NameDict(collections.abc.MutableMapping):
     """A dictionary whose keys are dns.name.Name objects.
 
     In addition to being like a regular Python dictionary, this