diff --git a/tools/MultiRelay/odict.py b/tools/MultiRelay/odict.py
index 107cb01..ca11f01 100644
--- a/tools/MultiRelay/odict.py
+++ b/tools/MultiRelay/odict.py
@@ -3,7 +3,10 @@ try:
     from UserDict import DictMixin
 except ImportError:
     from collections import UserDict
-    from collections import MutableMapping as DictMixin
+    try:
+        from collections import MutableMapping as DictMixin
+    except ImportError:
+        from collections.abc import MutableMapping as DictMixin
 
 class OrderedDict(dict, DictMixin):