Gemfile.lock in microevent-1.0.1 vs Gemfile.lock in microevent-1.0.2

@@ -1,12 +1,14 @@
 PATH
   remote: .
   specs:
-    microevent (1.0.0)
+    microevent (1.0.1)
+      thread_safe
 
 GEM
   remote: https://rubygems.org/
   specs:
+    thread_safe (0.3.5)
 
 PLATFORMS
   ruby
 
 DEPENDENCIES