diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index bf123b165..fafc09f4a 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -245,7 +245,7 @@ GEM
     rb-fsevent (0.11.1)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.3.2)
+    rexml (3.3.6)
       strscan
     rouge (3.26.0)
     ruby2_keywords (0.0.5)