diff --git a/Gemfile.lock b/Gemfile.lock
index 0c294bc..4035c96 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -55,7 +55,7 @@ GEM
     tmuxinator (0.9.0)
       erubis (~> 2.6)
       thor (~> 0.19, >= 0.15.0)
-    yard (0.9.9)
+    yard (0.9.20)
 
 PLATFORMS
   ruby