diff --git a/Gemfile.lock b/Gemfile.lock
index 844bdb0..c5c0705 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -87,7 +87,7 @@ GEM
       crack (>= 0.3.2)
       hashdiff (>= 0.4.0, < 2.0.0)
     webrick (1.7.0)
-    yard (0.9.27)
+    yard (0.9.28)
       webrick (~> 1.7.0)
 
 PLATFORMS