diff --git a/interface/src/main/java/xsbti/Versions.java b/interface/src/main/java/xsbti/Versions.java
index 8576aeaf5..122499c04 100644
--- a/interface/src/main/java/xsbti/Versions.java
+++ b/interface/src/main/java/xsbti/Versions.java
@@ -5,7 +5,7 @@ package xsbti;
 
 public interface Versions
 {
-	public static final String Sbt = "0.7";
+	public static final String Sbt = "0.7.0_13"; // keep in sync with LauncherProject in the XSbt project definition;
 	public static final int Interface = 1;
 	public static final int BootInterface = 1;
 }