diff --git a/config.cfg b/config.cfg
index d9f93b0..3aa30f6 100644
--- a/config.cfg
+++ b/config.cfg
@@ -30,6 +30,9 @@ default_service_policy=ignore
 # do depclean on Gentoo
 do_depclean=yes
 
+# do eix-sync on Gentoo
+do_reposync=yes
+
 # to only write to stderr when something unexpected happens or manual action is required
 # set stderr_loglevel to warning
 stderr_loglevel=debug
diff --git a/sau/gentoo.py b/sau/gentoo.py
index 276484d..e16160e 100644
--- a/sau/gentoo.py
+++ b/sau/gentoo.py
@@ -98,7 +98,8 @@ def pkg_upgrade():
     log = logging.getLogger(sau.LOGNAME)
     conf = sau.config
 
-    _sync_portage()
+    if conf.getboolean('default', 'do_reposync', fallback=True):
+        _sync_portage()
 
     # [ebuild     U ] media-plugins/alsa-plugins-1.1.8 [1.1.6]
     pretend_re = re.compile(r'^\[ebuild ([^\]]*)\] ([^ ]+)( \[[^\]]+\])?')