diff --git a/R/bundle.R b/R/bundle.R
index 378e16d..791f674 100644
--- a/R/bundle.R
+++ b/R/bundle.R
@@ -52,6 +52,7 @@ createAppManifest <- function(appDir, files) {
   # create the manifest
   manifest <- list()
   manifest$version <- 1
+  manifest$platform <- R.version.string
   manifest$packages <- I(packages)
   manifest$files <- I(fileChecksums)