diff --git a/docs/release/release_notes.md b/docs/release/release_notes.md
index 716a8202864ff56c22084592bb4ac9c815ab34e0..70332b18c0788f90f5fda6f41cbf7edad4891b78 100644
--- a/docs/release/release_notes.md
+++ b/docs/release/release_notes.md
@@ -2,6 +2,8 @@
 
 **This is a major new release. You cannot rollback once you've upgraded.**
 
+**This extension REQUIRES the mjwshared extension available here: https://lab.civicrm.org/extensions/mjwshared**
+
 * Use Stripe Elements: https://stripe.com/payments/elements.
 * Use PaymentIntents and comply with the European SCA directive (https://stripe.com/docs/strong-customer-authentication).
 * Require Stripe API Version: 2019-08-14 and ensure that all codepaths specify the API version.