diff --git a/app/src/main/res/xml/contacts.xml b/app/src/main/res/xml/contacts.xml
index d4bda98a..06b948e9 100644
--- a/app/src/main/res/xml/contacts.xml
+++ b/app/src/main/res/xml/contacts.xml
@@ -84,7 +84,7 @@
 		<DataKind kind="website" />
 
         <DataKind kind="event" dateWithTime="false" >
-            <Type maxOccurs="1" type="birthday" yearOptional="false" />
+            <Type maxOccurs="1" type="birthday" yearOptional="true" />
             <Type maxOccurs="1" type="anniversary" />
         </DataKind>
 
diff --git a/vcard4android b/vcard4android
index 1bb0b253..0cb821c7 160000
--- a/vcard4android
+++ b/vcard4android
@@ -1 +1 @@
-Subproject commit 1bb0b25339af67f550e334f5d6b2cd4752e24a9f
+Subproject commit 0cb821c7b4b5cb30995b1e75802f7aefd85ef5f3