diff --git a/manifest.yaml b/manifest.yaml
index 8f0ee13..bcd2244 100644
--- a/manifest.yaml
+++ b/manifest.yaml
@@ -140,7 +140,7 @@ dublin_core:
         - 
             identifier: ayt
             language: id
-            version: "?"
+            version: '?'
     subject: Bible
     title: Unlocked Literal Bible
     type: bundle