diff --git a/slate-docs/Gemfile.lock b/slate-docs/Gemfile.lock
index 4bb3e6f8..e03914ed 100644
--- a/slate-docs/Gemfile.lock
+++ b/slate-docs/Gemfile.lock
@@ -98,7 +98,7 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     redcarpet (3.6.0)
-    rexml (3.3.9)
+    rexml (3.4.2)
     rouge (3.30.0)
     sass (3.7.4)
       sass-listen (~> 4.0.0)