diff --git a/install/project/build.properties b/install/project/build.properties
index 7dbce4c87..63434d2ee 100644
--- a/install/project/build.properties
+++ b/install/project/build.properties
@@ -2,6 +2,6 @@
 #Thu Jun 25 14:31:30 EDT 2009
 project.organization=org.scala-tools.sbt
 project.name=extract
-sbt.version=0.5
+sbt.version=0.5.1
 project.version=0.1
 scala.version=2.7.5