diff --git a/README.md b/README.md
index 784454c..cb7bc7d 100644
--- a/README.md
+++ b/README.md
@@ -675,6 +675,7 @@ primary_key = ["account_id", "user_id"]
 	[[actions.columns]]
 	name = "role"
 	type = "TEXT"
+	nullable = false
 
 	# Backfill the new table from `users` and uppercase the `role`
 	[actions.up]