diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
index 858c08d536..2b07401147 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_statements.rb
@@ -617,7 +617,7 @@ def remove_columns(table_name, *column_names, **options)
       # In that case, +type+ and +options+ will be used by #add_column.
       # Indexes on the column are automatically removed.
       def remove_column(table_name, column_name, type = nil, **options)
-        execute "ALTER TABLE #{quote_table_name(table_name)} #{remove_column_for_alter(table_name, column_name, type, options)}"
+        execute "ALTER TABLE #{quote_table_name(table_name)} #{remove_column_for_alter(table_name, column_name, type, **options)}"
       end
 
       # Changes the column's definition according to the new options.
@@ -1444,20 +1444,37 @@ def bulk_change_table(table_name, operations)
           non_combinable_operations.each(&:call)
         end
 
-        def add_column_for_alter(table_name, column_name, type, options = {})
+        def add_column_for_alter(table_name, column_name, type, **options)
           td = create_table_definition(table_name)
           cd = td.new_column_definition(column_name, type, **options)
           schema_creation.accept(AddColumnDefinition.new(cd))
         end
 
-        def remove_column_for_alter(table_name, column_name, type = nil, options = {})
+        def remove_column_for_alter(table_name, column_name, type = nil, **options)
           "DROP COLUMN #{quote_column_name(column_name)}"
         end
 
-        def remove_columns_for_alter(table_name, *column_names)
+        def remove_columns_for_alter(table_name, *column_names, **options)
           column_names.map { |column_name| remove_column_for_alter(table_name, column_name) }
         end
 
+        def add_timestamps_for_alter(table_name, **options)
+          options[:null] = false if options[:null].nil?
+
+          if !options.key?(:precision) && supports_datetime_with_precision?
+            options[:precision] = 6
+          end
+
+          [
+            add_column_for_alter(table_name, :created_at, :datetime, **options),
+            add_column_for_alter(table_name, :updated_at, :datetime, **options)
+          ]
+        end
+
+        def remove_timestamps_for_alter(table_name, **options)
+          remove_columns_for_alter(table_name, :updated_at, :created_at)
+        end
+
         def insert_versions_sql(versions)
           sm_table = quote_table_name(schema_migration.table_name)
 
diff --git a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
index 646c8b0dab..17a7969f17 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract_mysql_adapter.rb
@@ -682,20 +682,6 @@ def remove_index_for_alter(table_name, column_name = nil, options = {})
           "DROP INDEX #{quote_column_name(index_name)}"
         end
 
-        def add_timestamps_for_alter(table_name, options = {})
-          options[:null] = false if options[:null].nil?
-
-          if !options.key?(:precision) && supports_datetime_with_precision?
-            options[:precision] = 6
-          end
-
-          [add_column_for_alter(table_name, :created_at, :datetime, options), add_column_for_alter(table_name, :updated_at, :datetime, options)]
-        end
-
-        def remove_timestamps_for_alter(table_name, options = {})
-          [remove_column_for_alter(table_name, :updated_at), remove_column_for_alter(table_name, :created_at)]
-        end
-
         def supports_rename_index?
           mariadb? ? false : database_version >= "5.7.6"
         end
diff --git a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb
index 85ed142537..128e9f5f0c 100644
--- a/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb
+++ b/activerecord/lib/active_record/connection_adapters/postgresql/schema_statements.rb
@@ -687,7 +687,7 @@ def extract_foreign_key_action(specifier)
             end
           end
 
-          def add_column_for_alter(table_name, column_name, type, options = {})
+          def add_column_for_alter(table_name, column_name, type, **options)
             return super unless options.key?(:comment)
             [super, Proc.new { change_column_comment(table_name, column_name, options[:comment]) }]
           end
@@ -719,20 +719,6 @@ def change_column_null_for_alter(table_name, column_name, null, default = nil)
             "ALTER COLUMN #{quote_column_name(column_name)} #{null ? 'DROP' : 'SET'} NOT NULL"
           end
 
-          def add_timestamps_for_alter(table_name, options = {})
-            options[:null] = false if options[:null].nil?
-
-            if !options.key?(:precision) && supports_datetime_with_precision?
-              options[:precision] = 6
-            end
-
-            [add_column_for_alter(table_name, :created_at, :datetime, options), add_column_for_alter(table_name, :updated_at, :datetime, options)]
-          end
-
-          def remove_timestamps_for_alter(table_name, options = {})
-            [remove_column_for_alter(table_name, :updated_at), remove_column_for_alter(table_name, :created_at)]
-          end
-
           def add_index_opclass(quoted_columns, **options)
             opclasses = options_for_index_columns(options[:opclass])
             quoted_columns.each do |name, column|
diff --git a/activerecord/test/cases/associations/belongs_to_associations_test.rb b/activerecord/test/cases/associations/belongs_to_associations_test.rb
index 168a4744eb..9436abdb58 100644
--- a/activerecord/test/cases/associations/belongs_to_associations_test.rb
+++ b/activerecord/test/cases/associations/belongs_to_associations_test.rb
@@ -242,7 +242,7 @@ def test_raises_type_mismatch_with_namespaced_class
     assert_nil defined?(Region), "This test requires that there is no top-level Region class"
 
     ActiveRecord::Base.connection.instance_eval do
-      create_table(:admin_regions) { |t| t.string :name }
+      create_table(:admin_regions, force: true) { |t| t.string :name }
       add_column :admin_users, :region_id, :integer
     end
     Admin.const_set "RegionalUser", Class.new(Admin::User) { belongs_to(:region) }
diff --git a/activerecord/test/cases/migration/change_table_test.rb b/activerecord/test/cases/migration/change_table_test.rb
index e5f4afb4ce..5a691b4ac3 100644
--- a/activerecord/test/cases/migration/change_table_test.rb
+++ b/activerecord/test/cases/migration/change_table_test.rb
@@ -283,14 +283,22 @@ def test_change_default_changes_column
 
       def test_remove_drops_single_column
         with_change_table do |t|
-          @connection.expect :remove_columns, nil, [:delete_me, :bar]
+          if RUBY_VERSION < "2.7"
+            @connection.expect :remove_columns, nil, [:delete_me, :bar, {}]
+          else
+            @connection.expect :remove_columns, nil, [:delete_me, :bar]
+          end
           t.remove :bar
         end
       end
 
       def test_remove_drops_multiple_columns
         with_change_table do |t|
-          @connection.expect :remove_columns, nil, [:delete_me, :bar, :baz]
+          if RUBY_VERSION < "2.7"
+            @connection.expect :remove_columns, nil, [:delete_me, :bar, :baz, {}]
+          else
+            @connection.expect :remove_columns, nil, [:delete_me, :bar, :baz]
+          end
           t.remove :bar, :baz
         end
       end