diff --git a/fastlane/Fastfile b/fastlane/Fastfile
index 872ebc9..3c45592 100644
--- a/fastlane/Fastfile
+++ b/fastlane/Fastfile
@@ -127,7 +127,7 @@
   lane :beta do
     supply(
       track: 'alpha',
-      track_promote_to: beta,
+      track_promote_to: 'beta',
     )
   end
 
@@ -135,7 +135,7 @@
   lane :production do
     supply(
       track: 'beta',
-      track_promote_to: production,
+      track_promote_to: 'production',
     )
   end