diff --git a/lib/datory/attributes/dsl.rb b/lib/datory/attributes/dsl.rb
index 5a4220b..70c404e 100644
--- a/lib/datory/attributes/dsl.rb
+++ b/lib/datory/attributes/dsl.rb
@@ -40,11 +40,6 @@ def uuid(name, **options)
 
         ########################################################################
 
-        def symbol(name, **options)
-          options = options.merge(from: Symbol)
-          attribute(name, **options)
-        end
-
         def string(name, **options)
           options = options.merge(from: String)
           attribute(name, **options)
@@ -60,21 +55,6 @@ def float(name, **options)
           attribute(name, **options)
         end
 
-        def date(name, **options)
-          options = options.merge(from: Date)
-          attribute(name, **options)
-        end
-
-        def time(name, **options)
-          options = options.merge(from: Time)
-          attribute(name, **options)
-        end
-
-        def datetime(name, **options)
-          options = options.merge(from: DateTime)
-          attribute(name, **options)
-        end
-
         ########################################################################
 
         def collection_of_attributes