diff --git a/activerecord/lib/active_record/attribute.rb b/activerecord/lib/active_record/attribute.rb
index 8cc19045757f6e0acbba984df4802a33fa875445..88536eaac0d920979b631cdd37bfd59b6fe12623 100644
--- a/activerecord/lib/active_record/attribute.rb
+++ b/activerecord/lib/active_record/attribute.rb
@@ -9,6 +9,10 @@ def from_user(name, value, type)
         FromUser.new(name, value, type)
       end
 
+      def with_cast_value(name, value, type)
+        WithCastValue.new(name, value, type)
+      end
+
       def null(name)
         Null.new(name)
       end
@@ -58,6 +62,10 @@ def with_value_from_database(value)
       self.class.from_database(name, value, type)
     end
 
+    def with_cast_value(value)
+      self.class.with_cast_value(name, value, type)
+    end
+
     def type_cast(*)
       raise NotImplementedError
     end
@@ -93,6 +101,16 @@ def type_cast(value)
       end
     end
 
+    class WithCastValue < Attribute # :nodoc:
+      def type_cast(value)
+        value
+      end
+
+      def changed_in_place_from?(old_value)
+        false
+      end
+    end
+
     class Null < Attribute # :nodoc:
       def initialize(name)
         super(name, nil, Type::Value.new)
diff --git a/activerecord/lib/active_record/attribute_methods/write.rb b/activerecord/lib/active_record/attribute_methods/write.rb
index b3c8209a74b9e159229acbfe956ac55d55dce13b..16804f86bfe7cefaa112bd70530f32cbb65d1aab 100644
--- a/activerecord/lib/active_record/attribute_methods/write.rb
+++ b/activerecord/lib/active_record/attribute_methods/write.rb
@@ -73,7 +73,7 @@ def write_attribute_with_type_cast(attr_name, value, should_type_cast)
         if should_type_cast
           @attributes.write_from_user(attr_name, value)
         else
-          @attributes.write_from_database(attr_name, value)
+          @attributes.write_cast_value(attr_name, value)
         end
 
         value
diff --git a/activerecord/lib/active_record/attribute_set.rb b/activerecord/lib/active_record/attribute_set.rb
index 6b1d7ea79e9635dc961ebfe50257ed531c85e11b..66fcaf69458b86cd625bceb0d3b865b8d74fb885 100644
--- a/activerecord/lib/active_record/attribute_set.rb
+++ b/activerecord/lib/active_record/attribute_set.rb
@@ -39,6 +39,10 @@ def write_from_user(name, value)
       attributes[name] = self[name].with_value_from_user(value)
     end
 
+    def write_cast_value(name, value)
+      attributes[name] = self[name].with_cast_value(value)
+    end
+
     def freeze
       @attributes.freeze
       super
diff --git a/activerecord/test/cases/serialized_attribute_test.rb b/activerecord/test/cases/serialized_attribute_test.rb
index 66f345d80595925b2beed5de9275e6ff84469c19..56a0e92e1dc5ab3739ad2eb4dc22151914fcd833 100644
--- a/activerecord/test/cases/serialized_attribute_test.rb
+++ b/activerecord/test/cases/serialized_attribute_test.rb
@@ -243,8 +243,9 @@ def test_serialized_column_should_unserialize_after_update_column
     t = Topic.create(content: "first")
     assert_equal("first", t.content)
 
-    t.update_column(:content, Topic.type_for_attribute('content').type_cast_for_database("second"))
-    assert_equal("second", t.content)
+    t.update_column(:content, ["second"])
+    assert_equal(["second"], t.content)
+    assert_equal(["second"], t.reload.content)
   end
 
   def test_serialized_column_should_unserialize_after_update_attribute
@@ -253,5 +254,6 @@ def test_serialized_column_should_unserialize_after_update_attribute
 
     t.update_attribute(:content, "second")
     assert_equal("second", t.content)
+    assert_equal("second", t.reload.content)
   end
 end