diff --git a/src/app/db/migrations/0243_oval_pestilence.sql b/src/app/db/migrations/0243_oval_pestilence.sql
index 0b407355..0367b974 100644
--- a/src/app/db/migrations/0243_oval_pestilence.sql
+++ b/src/app/db/migrations/0243_oval_pestilence.sql
@@ -1 +1 @@
-ALTER TABLE "epc_building_part" ALTER COLUMN "wall_insulation_thickness" SET DATA TYPE jsonb;
\ No newline at end of file
+ALTER TABLE "epc_building_part" ALTER COLUMN "wall_insulation_thickness" SET DATA TYPE jsonb USING wall_insulation_thickness::jsonb;;
\ No newline at end of file