Appraisals in file_validators-3.0.0.beta1 vs Appraisals in file_validators-3.0.0.beta2

@@ -21,5 +21,9 @@
 end
 
 appraise 'activemodel-5.0' do
   gem 'activemodel', '5.0.1'
 end
+
+appraise 'activemodel-5.2' do
+  gem 'activemodel', '5.2.1'
+end