diff --git a/Gemfile.lock b/Gemfile.lock
index e4faa80b837..34857c91a4e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -836,7 +836,7 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     rbtree3 (0.7.1)
-    rdoc (6.6.0)
+    rdoc (6.6.1)
       psych (>= 4.0.0)
     recaptcha (5.16.0)
     redcarpet (3.6.0)