diff --git a/Gemfile.lock b/Gemfile.lock
index 89252ba..8dfefe5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -74,7 +74,7 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.11.1)
       ffi (~> 1.0)
-    rexml (3.4.0)
+    rexml (3.4.2)
     rouge (3.30.0)
     ruby-vips (2.2.3)
       ffi (~> 1.12)