Prepare for 2.5.4
diff --git a/release-notes/VERSION b/release-notes/VERSION
index 382e2be..aa3ddef 100644
--- a/release-notes/VERSION
+++ b/release-notes/VERSION
@@ -4,7 +4,7 @@
 === Releases ===
 ------------------------------------------------------------------------
 
-2.5.4 (not yet released)
+2.5.4 (09-Jun-2015)
 
 #676: Deserialization of class with generic collection inside depends on
   how is was deserialized first time