diff --git a/src/betamax/headers.py b/src/betamax/headers.py
index c1df11b..40d5713 100644
--- a/src/betamax/headers.py
+++ b/src/betamax/headers.py
@@ -8,7 +8,7 @@
 """
 import sys
 
-from collections import Mapping, MutableMapping
+from collections.abc import Mapping, MutableMapping
 
 __all__ = ('HTTPHeaderDict',)