1 files changed, 6 insertions, 0 deletions
diff --git a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb
index db489143af..28d37881b6 100644
--- a/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb
+++ b/activerecord/lib/active_record/connection_adapters/abstract/schema_definitions.rb
@@ -263,6 +263,7 @@ module ActiveRecord
       deprecate :indexes=
 
       def initialize(
+        conn,
         name,
         temporary: false,
         if_not_exists: false,
@@ -271,6 +272,7 @@ module ActiveRecord
         comment: nil,
         **
       )
+        @conn = conn
         @columns_hash = {}
         @indexes = []
         @foreign_keys = []
@@ -410,6 +412,10 @@ module ActiveRecord
       def timestamps(**options)
         options[:null] = false if options[:null].nil?
 
+        if !options.key?(:precision) && @conn.supports_datetime_with_precision?
+          options[:precision] = 6
+        end
+
         column(:created_at, :datetime, options)
         column(:updated_at, :datetime, options)
       end