diff --git a/lib/metanorma/ribose/version.rb b/lib/metanorma/ribose/version.rb
index c8f1611..a71cbab 100644
--- a/lib/metanorma/ribose/version.rb
+++ b/lib/metanorma/ribose/version.rb
@@ -1,5 +1,5 @@
 module Metanorma
   module Ribose
-    VERSION = "2.2.1".freeze
+    VERSION = "2.2.2".freeze
   end
 end