diff --git a/lib/attr_encrypted/adapters/active_record.rb b/lib/attr_encrypted/adapters/active_record.rb
index 92753308..2f66942f 100644
--- a/lib/attr_encrypted/adapters/active_record.rb
+++ b/lib/attr_encrypted/adapters/active_record.rb
@@ -76,7 +76,7 @@ def attr_encrypted(*attrs)
               # attributes are handled, @attributes[attr].value is nil which
               # breaks attribute_was. Setting it here returns us to the expected
               # behavior.
-              if Gem::Requirement.new('>= 5.2').satisfied_by?(RAILS_VERSION)
+              if Gem::Requirement.new('~> 5.2').satisfied_by?(RAILS_VERSION)
                 # This is needed support attribute_was before a record has
                 # been saved
                 set_attribute_was(attr, __send__(attr)) if value != __send__(attr)