--- a/mozilla/release-thunderbird-comm-beta.py
+++ b/mozilla/release-thunderbird-comm-beta.py
@@ -20,17 +20,17 @@ releaseConfig['productName']         = '
 releaseConfig['stage_product']       = 'thunderbird'
 releaseConfig['appName']             = 'mail'
 releaseConfig['relbranchPrefix']     = 'THUNDERBIRD'
 releaseConfig['mozilla_srcdir']      = 'mozilla'
 #  Current version info
 releaseConfig['version']             = '49.0b1'
 releaseConfig['appVersion']          = '49.0'
 releaseConfig['milestone']           = releaseConfig['appVersion']
-releaseConfig['buildNumber']         = 3
+releaseConfig['buildNumber']         = 4
 releaseConfig['baseTag']             = 'THUNDERBIRD_49_0b1'
 releaseConfig['partialUpdates']      = {
 
     '45.2b1': {
         'appVersion': '45.2',
         'buildNumber': 2,
         'baseTag': 'THUNDERBIRD_45_2b1',
     },
@@ -52,34 +52,34 @@ releaseConfig['partialUpdates']      = {
 releaseConfig['nextAppVersion']      = releaseConfig['appVersion']
 releaseConfig['nextVersion']         = releaseConfig['version']
 releaseConfig['nextMilestone']       = releaseConfig['milestone']
 #  Repository configuration, for tagging
 releaseConfig['sourceRepositories']  = {
     'comm': {
         'name': 'comm-beta',
         'path': 'releases/comm-beta',
-        'revision': 'd51efd110cb9',
+        'revision': '2b29b68058ea',
         'relbranch': None,
         'bumpFiles': {
             'mail/config/version.txt': {
                 'version': releaseConfig['appVersion'],
                 'nextVersion': releaseConfig['nextAppVersion']
             },
             'mail/config/version_display.txt': {
                 'version': releaseConfig['version'],
                 'nextVersion': releaseConfig['nextVersion']
             },
 
         }
     },
     'mozilla': {
         'name': 'mozilla-beta',
         'path': 'releases/mozilla-beta',
-        'revision': '1a4f61a21831',
+        'revision': '922311bede46',
         'relbranch': None,
         'bumpFiles': {
             'config/milestone.txt': {
                 'version': releaseConfig['milestone'],
                 'nextVersion': releaseConfig['nextMilestone']
             },
         }
     }