diff --git a/Gemfile.lock b/Gemfile.lock
index 74083cc..9980d85 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -109,7 +109,7 @@ GEM
     tsort (0.2.0)
     unicode-display_width (2.6.0)
     webrick (1.9.2)
-    yard (0.9.40)
+    yard (0.9.42)
     yard-coderay (0.1.0)
       coderay
       yard