diff --git a/Gemfile.lock b/Gemfile.lock
index e5b2c7a..fa2967c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -136,7 +136,7 @@ GEM
     rubyzip (3.3.1)
     semver2 (3.4.2)
     stringio (3.2.0)
-    test-unit (3.7.7)
+    test-unit (3.7.8)
       power_assert
     thor (1.5.0)
     thread_safe (0.3.6)