New versions require Ruby version >= 2.1.

Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
---
 Gemfile | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Gemfile b/Gemfile
index 90dc8a9..933b92b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -25,5 +25,6 @@ end
 
 
 # for RHEL7
+gem 'public_suffix', "< 3.0"
 gem 'json'
 gem 'json_pure'
-- 
2.14.3


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