diff --git a/docs/schema-update-cgen2.sql b/docs/schema-update-cgen2.sql
new file mode 100644
index 00000000..ce96f821
--- /dev/null
+++ b/docs/schema-update-cgen2.sql
@@ -0,0 +1,28 @@
+BEGIN;
+
+-- New tables
+
+SELECT statement_timestamp(), 'Creating new tables' as msg;
+
+CREATE TABLE btype (
+        id SERIAL NOT NULL PRIMARY KEY,
+        name TEXT UNIQUE NOT NULL
+) WITHOUT OIDS;
+
+CREATE TABLE build_types (
+        build_id INTEGER NOT NULL REFERENCES build(id),
+        btype_id INTEGER NOT NULL REFERENCES btype(id),
+        PRIMARY KEY (build_id, btype_id)
+) WITHOUT OIDS;
+
+-- predefined build types
+
+SELECT statement_timestamp(), 'Adding predefined build types' as msg;
+INSERT INTO btype(name) VALUES ('rpm');
+INSERT INTO btype(name) VALUES ('maven');
+INSERT INTO btype(name) VALUES ('win');
+INSERT INTO btype(name) VALUES ('image');
+
+
+COMMIT;
+