diff --git a/src/lib/isPassportNumber.js b/src/lib/isPassportNumber.js
index 4763d6566..c1803fb50 100644
--- a/src/lib/isPassportNumber.js
+++ b/src/lib/isPassportNumber.js
@@ -11,7 +11,7 @@ const passportRegexByCountryCode = {
   AR: /^[A-Z]{3}\d{6}$/, // ARGENTINA
   AT: /^[A-Z]\d{7}$/, // AUSTRIA
   AU: /^[A-Z]\d{7}$/, // AUSTRALIA
-  AZ: /^[A-Z]{2,3}\d{7,8}$/, // AZERBAIJAN
+  AZ: /^[A-Z]{1}\d{8}$/, // AZERBAIJAN
   BE: /^[A-Z]{2}\d{6}$/, // BELGIUM
   BG: /^\d{9}$/, // BULGARIA
   BR: /^[A-Z]{2}\d{6}$/, // BRAZIL