diff --git a/Zend/zend.h b/Zend/zend.h
index d2a4ef6957868..0f98aad0dcbc6 100644
--- a/Zend/zend.h
+++ b/Zend/zend.h
@@ -22,7 +22,7 @@
 #ifndef ZEND_H
 #define ZEND_H
 
-#define ZEND_VERSION "2.5.0-dev"
+#define ZEND_VERSION "2.6.0-dev"
 
 #define ZEND_ENGINE_2