--- a/hgext3rd/topic/server.py	Wed Feb 19 01:35:23 2020 +0100
+++ b/hgext3rd/topic/server.py	Wed Mar 04 13:17:00 2020 +0100
@@ -5,12 +5,15 @@
 from mercurial import (
     extensions,
     repoview,
-    repoviewutil,
     wireprototypes,
     wireprotov1peer,
     wireprotov1server,
 )
 
+from mercurial.utils import (
+    repoviewutil,
+)
+
 from . import (
     common,
     constants,