diff --git a/core/server/data/migrations/versions/4.2/01-fix-incorrect-mrr-delta-events.js b/core/server/data/migrations/versions/4.2/01-fix-incorrect-mrr-delta-events.js
new file mode 100644
index 0000000000..7e24200303
--- /dev/null
+++ b/core/server/data/migrations/versions/4.2/01-fix-incorrect-mrr-delta-events.js
@@ -0,0 +1,13 @@
+const {createTransactionalMigration} = require('../../utils');
+const logging = require('../../../../../shared/logging');
+
+module.exports = createTransactionalMigration(
+    async function up(knex) {
+        logging.info('Fixing incorrect mrr_delta in members_paid_subscription_events table');
+        await knex.raw('UPDATE members_paid_subscription_events SET mrr_delta = ROUND(mrr_delta / 2) WHERE from_plan = to_plan');
+    },
+    async function down(knex) {
+        logging.info('Reverting mrr_delta to old value in members_paid_subscription_events table');
+        await knex.raw('UPDATE members_paid_subscription_events SET mrr_delta = ROUND(mrr_delta * 2) WHERE from_plan = to_plan');
+    }
+);