diff --git a/gradle.properties b/gradle.properties
index 7cfb725..583f002 100644
--- a/gradle.properties
+++ b/gradle.properties
@@ -1,8 +1,8 @@
 group = org.xbib
 name = oai
-version = 2.5.4
+version = 2.6.0
 
 gradle.wrapper.version = 6.6.1
-xbib-content.version = 2.6.2
+xbib-content.version = 4.0.0
 xbib-marc.version = 2.4.0
 xbib-bibliographic-character-sets.version = 2.0.0