       console.log "Joining session #{sessionId}"
       if sessionId
         bootstrapScript = 'collaboration/lib/bootstrap'
-        new AtomWindow({bootstrapScript, @resourcePath, sessionId, devMode})
+        new AtomWindow({bootstrapScript, @resourcePath, sessionId, devMode, @updateAvailable})
     else
       console.log "Opening unknown url #{urlToOpen}"
 

module.exports =
class AtomApplication
  _.extend @prototype, EventEmitter.prototype

  # Public: The entry point into the Atom application.
  @open: (options) ->

      else
        resourcePath = @resourcePath
        bootstrapScript = require.resolve('./window-bootstrap')
      openedWindow = new AtomWindow({pathToOpen, initialLine, bootstrapScript, resourcePath, devMode, @updateAvailable})

    if pidToKillWhenClosed?
      @pidsToOpenWindows[pidToKillWhenClosed] = openedWindow
