diff --git a/launch/src/main/resources/sbt/sbt.boot.properties b/launch/src/main/resources/sbt/sbt.boot.properties
index 3a4074956..118b3c4f2 100644
--- a/launch/src/main/resources/sbt/sbt.boot.properties
+++ b/launch/src/main/resources/sbt/sbt.boot.properties
@@ -5,7 +5,7 @@
 [app]
   org: org.scala-tools.sbt
   name: sbt
-  version: read(sbt.version)[0.9.0-SNAPSHOT]
+  version: read(sbt.version)[0.9.1-SNAPSHOT]
   class: sbt.xMain
   components: xsbti
   cross-versioned: true
diff --git a/project/build.properties b/project/build.properties
index 782161ff7..646e755e2 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1,5 +1,5 @@
 project.organization=org.scala-tools.sbt
 project.name=xsbt
 sbt.version=0.7.4
-project.version=0.9.0-SNAPSHOT
+project.version=0.9.1-SNAPSHOT
 build.scala.versions=2.8.1