--- a/hgext/firefoxreleases/__init__.py
+++ b/hgext/firefoxreleases/__init__.py
@@ -27,17 +27,17 @@ with open(os.path.join(OUR_DIR, '..', 'b
 import mozautomation.releasedb as releasedb
 
 from mozhg.util import (
     is_firefox_repo,
 )
 
 
 minimumhgversion = '4.8'
-testedwith = '4.8'
+testedwith = '4.8 4.9'
 
 configtable = {}
 configitem = registrar.configitem(configtable)
 
 configitem('mozilla', 'enablefirefoxreleases',  # deprecated, use firefox_releasing
            default=configitems.dynamicdefault)
 configitem('mozilla', 'firefox_releasing',
            default=configitems.dynamicdefault)