diff --git a/README.md b/README.md
index 7e4f0394b..5f9812251 100644
--- a/README.md
+++ b/README.md
@@ -34,7 +34,7 @@ The specification also used to be in this repo -- it is now a part of the main r
   - install Windows 7 professional N 64-bit, ensure network access to GitHub
   - install Oracle Java 6 JDK
   - install WiX v3.6 (reboot!)
-  - download sbt launcher 0.13.1 from xsbt.org to `c:\users\jenkins\Downloads`
+  - download sbt launcher from xsbt.org to `c:\users\jenkins\Downloads`
   - install Git
   - configure the Jenkins master's tool locations for
      - HOME
diff --git a/project/build.properties b/project/build.properties
index 748703f77..817bc38df 100644
--- a/project/build.properties
+++ b/project/build.properties
@@ -1 +1 @@
-sbt.version=0.13.7
+sbt.version=0.13.9
diff --git a/project/plugins.sbt b/project/plugins.sbt
index 35421a3fa..ec8543a63 100644
--- a/project/plugins.sbt
+++ b/project/plugins.sbt
@@ -1,6 +1,6 @@
 scalacOptions ++= Seq("-deprecation", "-feature", "-Xlint")
 
-addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "1.0.4")
+addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "1.0.6")
 
 addSbtPlugin("com.typesafe.sbt" % "sbt-s3" % "0.8")