diff --git a/conf/intel/portage/package.mask/00-sabayon.package.mask b/conf/intel/portage/package.mask/00-sabayon.package.mask
index 7ed6cc8b..38277937 100644
--- a/conf/intel/portage/package.mask/00-sabayon.package.mask
+++ b/conf/intel/portage/package.mask/00-sabayon.package.mask
@@ -260,5 +260,8 @@ virtual/linux-sources::gentoo
 # version (DEPEND)
 >=media-libs/freetype-2.9
 
+# 2018-06-20 Sławomir Nizio: www-client/conkeror (as of 1.0.4) wants <57
+>=www-client/firefox-bin-57
+
 # Temp mask
 dev-lang/python:3.6