Gemfile.lock in mesh-medical-subject-headings-2.1.0 vs Gemfile.lock in mesh-medical-subject-headings-2.2.0

@@ -1,8 +1,8 @@
 PATH
   remote: .
   specs:
-    mesh-medical-subject-headings (2.1.0)
+    mesh-medical-subject-headings (2.2.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
     metaclass (0.0.4)