diff --git a/Gemfile.lock b/Gemfile.lock
index 6251577..ad15991 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -553,7 +553,7 @@ GEM
     rb-fsevent (0.9.4)
     rb-inotify (0.9.4)
       ffi (>= 0.5.0)
-    rdoc (6.0.4)
+    rdoc (6.3.2)
     rdoc-generator-fivefish (0.4.0)
       inversion (~> 1.1)
       loggability (~> 0.12)