diff --git a/build.sbt b/build.sbt
index 267ebf00a..a7d801219 100644
--- a/build.sbt
+++ b/build.sbt
@@ -172,8 +172,23 @@ val root = (project in file(".")).
     mappings in Universal := {
       val t = (target in Universal).value
       val prev = (mappings in Universal).value
-      val BinBat = "bin" + java.io.File.separator + "sbt.bat"
+      val BinSbt = "bin" + java.io.File.separator + "sbt"
+      val BinBat = BinSbt + ".bat"
       prev.toList map {
+        case (k, BinSbt) =>
+          import java.nio.file.{Files, FileSystems}
+          
+          val x = IO.read(k)
+          IO.write(t / "sbt", x.replaceAllLiterally(
+            "declare init_sbt_version=_to_be_replaced",
+            s"""declare init_sbt_version=$sbtVersionToRelease"""))
+
+          if (FileSystems.getDefault.supportedFileAttributeViews.contains("posix")) {
+            val perms = Files.getPosixFilePermissions(k.toPath)
+            Files.setPosixFilePermissions(t / "sbt" toPath, perms)
+          }
+
+          (t / "sbt", BinSbt)
         case (k, BinBat) =>
           val x = IO.read(k)
           IO.write(t / "sbt.bat", x.replaceAllLiterally(