diff --git a/build.xml b/build.xml
index 9acd1e74..060be7ce 100644
--- a/build.xml
+++ b/build.xml
@@ -109,7 +109,7 @@
     -->
 
     <!-- Default validUntil duration for all generated metadata, in days. -->
-    <property name="validUntil.default.days" value="14"/>
+    <property name="validUntil.default.days" value="21"/>
 
     <!-- Specific validUntil duration for aggregates, in days. -->
     <property name="validUntil.aggregate.days" value="${validUntil.default.days}"/>