diff --git a/migrate.go b/migrate.go
index 547dc58..e14af61 100644
--- a/migrate.go
+++ b/migrate.go
@@ -15,6 +15,9 @@ func runMigrations(database *sql.DB) {
 		`ALTER TABLE users ADD COLUMN email TEXT UNIQUE`,
 		// Verification codes use a generic identifier column.
 		`ALTER TABLE verification_codes ADD COLUMN identifier TEXT NOT NULL DEFAULT ''`,
+		// Indexes for auth tables (created here so they run after column migrations).
+		`CREATE INDEX IF NOT EXISTS idx_sessions_user ON sessions(user_id)`,
+		`CREATE INDEX IF NOT EXISTS idx_verification_codes_identifier ON verification_codes(identifier)`,
 	}
 	for _, m := range migrations {
 		_, err := database.Exec(m)
diff --git a/schema.sql b/schema.sql
index 6f37680..f77ce16 100644
--- a/schema.sql
+++ b/schema.sql
@@ -61,5 +61,3 @@ CREATE TABLE IF NOT EXISTS verification_codes (
 CREATE INDEX IF NOT EXISTS idx_slots_event ON slots(event_id);
 CREATE INDEX IF NOT EXISTS idx_claims_slot ON claims(slot_id);
 CREATE INDEX IF NOT EXISTS idx_rsvps_event ON rsvps(event_id);
-CREATE INDEX IF NOT EXISTS idx_sessions_user ON sessions(user_id);
-CREATE INDEX IF NOT EXISTS idx_verification_codes_identifier ON verification_codes(identifier);