diff --git a/Gemfile.lock b/Gemfile.lock
index 618f71e..24a6968 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -1,17 +1,17 @@
 PATH
   remote: .
   specs:
-    uuid (2.3.7)
+    uuid (2.3.9)
       macaddr (~> 1.0)
 
 GEM
   remote: https://rubygems.org/
   specs:
-    macaddr (1.6.7)
-      systemu (~> 2.6.2)
+    macaddr (1.7.2)
+      systemu (~> 2.6.5)
     mocha (0.9.12)
-    rake (0.8.7)
-    systemu (2.6.4)
+    rake (12.3.3)
+    systemu (2.6.5)
     yard (0.6.7)
 
 PLATFORMS