diff --git a/Gemfile.lock b/Gemfile.lock
index 76a34d4..8033f83 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -18,7 +18,7 @@ GEM
       json
       rake
     detabulator (0.1.0)
-    diffy (3.1.0)
+    diffy (3.4.2)
     highline (1.7.8)
     jmespath (1.2.4)
       json_pure (>= 1.8.1)