diff --git a/src/main/kotlin/com/beust/kobalt/misc/UpdateKobalt.kt b/src/main/kotlin/com/beust/kobalt/misc/UpdateKobalt.kt
index 70329323..773d1e23 100644
--- a/src/main/kotlin/com/beust/kobalt/misc/UpdateKobalt.kt
+++ b/src/main/kotlin/com/beust/kobalt/misc/UpdateKobalt.kt
@@ -10,7 +10,7 @@ import java.io.File
 public class UpdateKobalt @Inject constructor(val http: Http, val github: GithubApi) {
     fun updateKobalt() {
         val newVersion = github.latestKobaltVersion
-        KFiles.saveFile(File("kobalt/wrapper/kobalt-wrapper.properties"), "kobalt.version=$newVersion")
+        KFiles.saveFile(File("kobalt/wrapper/kobalt-wrapper.properties"), "kobalt.version=${newVersion.get()}")
         com.beust.kobalt.wrapper.main(arrayOf())
     }
 }