--- a/mercurial/repository.py	Fri Apr 13 10:23:05 2018 -0700
+++ b/mercurial/repository.py	Fri Apr 13 10:51:23 2018 -0700
@@ -278,7 +278,8 @@
         being issued.
         """
 
-class ipeerbase(ipeerconnection, ipeercapabilities, ipeercommands):
+class ipeerbase(ipeerconnection, ipeercapabilities, ipeercommands,
+                ipeerrequests):
     """Unified interface for peer repositories.
 
     All peer instances must conform to this interface.