diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 3d5352ef..bd5eb354 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -80,7 +80,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rexml (3.3.3)
+    rexml (3.3.6)
       strscan
     rouge (4.2.1)
     safe_yaml (1.0.5)