diff --git a/conf/intel/portage/package.mask/00-sabayon.package.mask b/conf/intel/portage/package.mask/00-sabayon.package.mask
index 5736d0db..736646ca 100644
--- a/conf/intel/portage/package.mask/00-sabayon.package.mask
+++ b/conf/intel/portage/package.mask/00-sabayon.package.mask
@@ -248,3 +248,7 @@ dev-lang/python:3.4
 
 # 2017-11-12 Sławomir Nizio: dev-util/lldb (as of 5.0.0) requires this
 >=dev-lang/swig-3.0.9
+
+# 2017-11-22 Sławomir Nizio: dev-haskell/yesod-routes (as of 1.2.0.7-r2)
+# depends an older version (Gentoo bug 610350)
+>=dev-lang/ghc-8