diff --git a/air-quality/schema.sql b/air-quality/schema.sql
index d028097..d5a406b 100644
--- a/air-quality/schema.sql
+++ b/air-quality/schema.sql
@@ -5,14 +5,14 @@ CREATE DATABASE airquality;
 CREATE EXTENSION IF NOT EXISTS timescaledb CASCADE;
 
 CREATE TABLE measurement_types (
-  parameter_id SERIAL PRIMARY KEY,
+  parameter_id INT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
   parameter TEXT NOT NULL,
   unit TEXT NOT NULL,
   UNIQUE(parameter, unit)
 );
 
 CREATE TABLE locations (
-  location_id SERIAL PRIMARY KEY,
+  location_id INT GENERATED BY DEFAULT AS IDENTITY PRIMARY KEY,
   city_name TEXT NOT NULL,
   country_name TEXT NOT NULL,
   location_name TEXT NOT NULL,