--- a/hgext/reviewboard/client.py
+++ b/hgext/reviewboard/client.py
@@ -77,17 +77,17 @@ from mozhg.auth import (
     getbugzillaauth,
     configureautobmoapikeyauth,
 )
 from mozhg.rewrite import (
     newparents,
     replacechangesets,
 )
 
-testedwith = '4.1 4.2'
+testedwith = '4.1 4.2 4.3'
 minimumhgversion = '4.1'
 buglink = 'https://bugzilla.mozilla.org/enter_bug.cgi?product=MozReview&component=Integration%3A%20Mercurial'
 
 cmdtable = {}
 
 # Mercurial 4.3 introduced registrar.command as a replacement for
 # cmdutil.command.
 if util.safehasattr(registrar, 'command'):

--- a/hgext/reviewboard/server.py
+++ b/hgext/reviewboard/server.py
@@ -49,17 +49,17 @@ execfile(os.path.join(OUR_DIR, '..', 'bo
 
 with demandimport.deactivated():
     try:
         import hgrb.proto
     except ImportError:
         sys.path.insert(0, OUR_DIR)
         import hgrb.proto
 
-testedwith = '4.1 4.2'
+testedwith = '4.1 4.2 4.3'
 minimumhgversion = '4.1'
 
 cmdtable = {}
 
 # Mercurial 4.3 introduced registrar.command as a replacement for
 # cmdutil.command.
 if util.safehasattr(registrar, 'command'):
     command = registrar.command(cmdtable)