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-rw-r--r--doc/development/prometheus_metrics.md4
1 files changed, 1 insertions, 3 deletions
diff --git a/doc/development/prometheus_metrics.md b/doc/development/prometheus_metrics.md
index 66e980978bf..da6ba14cdd8 100644
--- a/doc/development/prometheus_metrics.md
+++ b/doc/development/prometheus_metrics.md
@@ -36,9 +36,7 @@ After you add or change an existing common metric, you must [re-run the import s
Or, you can create a database migration:
```ruby
-class ImportCommonMetrics < ActiveRecord::Migration[4.2]
- include Gitlab::Database::MigrationHelpers
-
+class ImportCommonMetrics < Gitlab::Database::Migration[1.0]
def up
::Gitlab::DatabaseImporters::CommonMetrics::Importer.new.execute
end