Index: lucene/core/src/java/org/apache/lucene/util/Constants.java
===================================================================
--- lucene/core/src/java/org/apache/lucene/util/Constants.java	(revision 1355201)
+++ lucene/core/src/java/org/apache/lucene/util/Constants.java	(working copy)
@@ -107,7 +107,7 @@
   /**
    * This is the internal Lucene version, recorded into each segment.
    */
-  public static final String LUCENE_MAIN_VERSION = ident("4.0");
+  public static final String LUCENE_MAIN_VERSION = ident("4.0.0.1");
 
   /**
    * This is the Lucene version for display purposes.