diff --git a/migrations/000.508.sql b/migrations/000.508.sql
new file mode 100644
index 0000000..7277a81
--- /dev/null
+++ b/migrations/000.508.sql
@@ -0,0 +1,5 @@
+ALTER TABLE paint_primer_sizes ADD COLUMN coverage_m2 NUMERIC NOT NULL DEFAULT 1;
+
+UPDATE paint_primer_sizes SET coverage_m2 = 3.5 WHERE liters = 0.9;
+UPDATE paint_primer_sizes SET coverage_m2 = 11 WHERE liters = 2.7;
+UPDATE paint_primer_sizes SET coverage_m2 = 2 WHERE liters = 0.5;