diff --git a/sql/00020.sql b/sql/00020.sql
new file mode 100644
index 0000000..bfe8680
--- /dev/null
+++ b/sql/00020.sql
@@ -0,0 +1,2 @@
+ALTER TABLE _webservice."user" ADD timezone varchar DEFAULT 'UTC' NOT NULL;
+ALTER TABLE public.schedule ALTER COLUMN "time" TYPE timestamp USING "time"::timestamp;