diff --git a/allowlist.txt b/allowlist.txt
index 35c9611..89f0d21 100644
--- a/allowlist.txt
+++ b/allowlist.txt
@@ -28,6 +28,13 @@ ipv64.de
 
 #-----------------------------------------
 
+# -----------------------------------------
+# 💳 PROCESSOUT – ZAHLUNG / CHECKOUT
+# -----------------------------------------
+# 🟢 Zahlungs-Checkout
+checkout.processout.com
+# -----------------------------------------
+
 # -----------------------------------------
 # 🧩 PLAYSTATION – Bilder & Medien
 # -----------------------------------------