diff --git a/Gemfile.lock b/Gemfile.lock
index beee33a..b3df2af 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -304,7 +304,7 @@ GEM
     wirb (1.0.3)
       paint (~> 0.8)
     wirble (0.1.3)
-    yard (0.8.7.4)
+    yard (0.9.20)
 
 PLATFORMS
   ruby