diff --git a/Gemfile.lock b/Gemfile.lock
index f1ccd40..b4bc362 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -42,7 +42,7 @@ GEM
     public_suffix (4.0.7)
     racc (1.7.3)
     rainbow (3.1.1)
-    rexml (3.3.3)
+    rexml (3.3.6)
       strscan
     strscan (3.1.0)
     tomlrb (2.0.3)