diff --git a/vitruvio-form-common-attrs.xsd b/vitruvio-form-common-attrs.xsd
index 5c42cd5..f5f7fe1 100644
--- a/vitruvio-form-common-attrs.xsd
+++ b/vitruvio-form-common-attrs.xsd
@@ -97,6 +97,7 @@
 	<xs:attribute name="mobileAllowed" type="xs:boolean" />
 	<xs:attribute name="readOnly" type="xs:boolean" />
 	<xs:attribute name="processVariable" type="xs:boolean" />
+	<xs:attribute name="bulkRequired" type="xs:boolean" />
 	<xs:attributeGroup ref="elementAlign" />
 </xs:attributeGroup>