diff --git a/CITATION.cff b/CITATION.cff
index d51167c5..1add3de7 100644
--- a/CITATION.cff
+++ b/CITATION.cff
@@ -16,5 +16,6 @@ keywords:
   - react native
   - mongodb
   - stripe
+  - paypal
 url: "https://github.com/aelassas/bookcars"
 type: software