Steepfile in rbs_rails-0.7.0 vs Steepfile in rbs_rails-0.8.0

@@ -7,9 +7,12 @@
 
   library "pathname"
   library "logger"
   library "mutex_m"
   library "date"
+  library 'monitor'
+  library 'singleton'
+  library 'tsort'
 
   library 'activesupport'
   library 'actionpack'
   library 'activejob'
   library 'activemodel'