diff --git a/Gemfile.lock b/Gemfile.lock
index b6243ef..4cbbf4b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -138,7 +138,7 @@ GEM
     webmock (1.7.6)
       addressable (~> 2.2, > 2.2.5)
       crack (>= 0.1.7)
-    yard (0.7.2)
+    yard (0.9.20)
 
 PLATFORMS
   ruby