diff --git a/docs/Gemfile.lock b/docs/Gemfile.lock
index 48741088f3..744fc57c49 100644
--- a/docs/Gemfile.lock
+++ b/docs/Gemfile.lock
@@ -69,7 +69,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.3.3)
+    rexml (3.3.6)
       strscan
     rouge (4.2.1)
     safe_yaml (1.0.5)