diff --git a/Gemfile.lock b/Gemfile.lock
index c55d84b..cf82d80 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -15,7 +15,7 @@ GEM
     test-spec (0.10.0)
     test-unit (2.1.2)
     xml-simple (1.0.12)
-    yard (0.6.2)
+    yard (0.9.26)
 
 PLATFORMS
   ruby
@@ -27,5 +27,4 @@ DEPENDENCIES
   rcov (>= 0.9.9)
   test-spec (>= 0.10.0)
   test-unit (>= 2.1.2)
-  xml-simple (>= 1.0.12)
   yard (>= 0.6.2)