Steepfile in rbs_rails-0.3.0 vs Steepfile in rbs_rails-0.4.0

@@ -5,7 +5,8 @@
   check "lib"                       # Directory name
 
   library "pathname"
   library "logger"
   library "mutex_m"
+  library "date"
   # library "strong_json"           # Gems
 end