prepare for 2.6.0-rc4
diff --git a/pom.xml b/pom.xml
index 6e22acf..d69b600 100644
--- a/pom.xml
+++ b/pom.xml
@@ -4,7 +4,7 @@
   <parent>
     <groupId>com.fasterxml.jackson</groupId>
     <artifactId>jackson-parent</artifactId>
-    <version>2.5.1</version>
+    <version>2.6.0-rc1</version>
   </parent>
 
   <groupId>com.fasterxml.jackson.core</groupId>