diff --git a/Gemfile.lock b/Gemfile.lock
index 2393b1a..5be9aec 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,7 +15,7 @@ GEM
     coderay (1.1.3)
     colorize (0.8.1)
     diff-lcs (1.4.4)
-    diffy (3.4.0)
+    diffy (3.4.2)
     method_source (1.0.0)
     mime-types (3.3.1)
       mime-types-data (~> 3.2015)