diff --git a/src/pass.js b/src/pass.js
index dc971d7..6e64ee8 100644
--- a/src/pass.js
+++ b/src/pass.js
@@ -57,6 +57,7 @@ exports.createPass = async function(data) {
         },
         body: JSON.stringify({
           PassJsonHash: passHash,
+          useBlackVersion: payload.dark
         })
     })
 
diff --git a/src/payload.js b/src/payload.js
index dfb78c3..6b1921d 100644
--- a/src/payload.js
+++ b/src/payload.js
@@ -83,6 +83,7 @@ exports.Payload = class {
     this.img2x = img2x
 
     this.raw = rawData
+    this.dark = dark
 
     this.name = name
     this.dose = dose