diff --git a/compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/JvmAbi.java b/compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/JvmAbi.java
index d2d003e4c6b..62eb07c5570 100644
--- a/compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/JvmAbi.java
+++ b/compiler/frontend.java/src/org/jetbrains/jet/lang/resolve/java/JvmAbi.java
@@ -21,7 +21,7 @@ public class JvmAbi {
      * This constant is used to identify binary format (class file) versions
      * If you change class file metadata format and/or naming conventions, please increase this number
      */
-    public static final int VERSION = 1;
+    public static final int VERSION = 2;
 
     public static final String TRAIT_IMPL_CLASS_NAME = "$TImpl";
     public static final String TRAIT_IMPL_SUFFIX = "$" + TRAIT_IMPL_CLASS_NAME;