diff --git a/Gemfile.lock b/Gemfile.lock
index 180d97d..e53e41c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -104,7 +104,7 @@ GEM
     simplecov-html (0.10.2)
     thor (0.20.3)
     unicode-display_width (1.5.0)
-    yard (0.9.19)
+    yard (0.9.20)
 
 PLATFORMS
   ruby