From 0c168144fd90fcbf5d408b995b826f39bf8bf121 Mon Sep 17 00:00:00 2001
From: Jay Shepherd <shepherdjay@users.noreply.github.com>
Date: Fri, 8 Oct 2021 22:53:14 -0400
Subject: [PATCH] Fix deprecation warning for collections

---
 flask_nav/__init__.py | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/flask_nav/__init__.py b/flask_nav/__init__.py
index 7c25dfa..5826b9e 100644
--- a/flask_nav/__init__.py
+++ b/flask_nav/__init__.py
@@ -1,4 +1,4 @@
-import collections
+import collections.abc
 from importlib import import_module
 import re
 
@@ -46,7 +46,7 @@ class NavbarRenderingError(Exception):
     pass
 
 
-class ElementRegistry(collections.MutableMapping):
+class ElementRegistry(collections.abc.MutableMapping):
     def __init__(self):
         self._elems = {}