--- a/contrib/import-checker.py	Tue Mar 21 17:21:45 2023 -0400
+++ b/contrib/import-checker.py	Tue Mar 21 20:47:30 2023 -0400
@@ -44,6 +44,7 @@
     # third-party imports should be directly imported
     'mercurial.thirdparty',
     'mercurial.thirdparty.attr',
+    'mercurial.thirdparty.jaraco.collections',
     'mercurial.thirdparty.zope',
     'mercurial.thirdparty.zope.interface',
     'typing',