diff --git a/Gemfile.lock b/Gemfile.lock
index ad8ffd565..33bea4629 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -10,7 +10,7 @@ GEM
       metaclass (~> 0.0.1)
     rake (0.9.2.2)
     redis (3.0.0.rc1)
-    yard (0.8.2)
+    yard (0.9.20)
 
 PLATFORMS
   java