diff --git a/app/PaymentDrivers/Stripe/ACSS.php b/app/PaymentDrivers/Stripe/ACSS.php
index c91a3f1efaec..d46817dc5a01 100644
--- a/app/PaymentDrivers/Stripe/ACSS.php
+++ b/app/PaymentDrivers/Stripe/ACSS.php
@@ -189,7 +189,7 @@ class ACSS
 
     }
 
-    public function processSuccessfulPayment(string $payment_intent)
+    public function processSuccessfulPayment(string $payment_intent): \Illuminate\Http\RedirectResponse
     {
         $data = [
             'payment_method' => $payment_intent,
diff --git a/app/PaymentDrivers/Stripe/BECS.php b/app/PaymentDrivers/Stripe/BECS.php
index 657647db260d..21ff8a0058d1 100644
--- a/app/PaymentDrivers/Stripe/BECS.php
+++ b/app/PaymentDrivers/Stripe/BECS.php
@@ -84,7 +84,7 @@ class BECS
 
     }
 
-    public function processSuccessfulPayment(string $payment_intent)
+    public function processSuccessfulPayment(string $payment_intent): \Illuminate\Http\RedirectResponse
     {
         $data = [
             'payment_method' => $payment_intent,