diff --git a/Gemfile.lock b/Gemfile.lock
index b490b0a69..ed19d67c4 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -350,7 +350,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rdoc (6.3.2)
+    rdoc (6.3.4.1)
     record_tag_helper (1.0.1)
       actionview (>= 5)
     regexp_parser (2.7.0)