diff --git a/Gemfile.lock b/Gemfile.lock
index 61d52c5..588c69f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -38,7 +38,7 @@ GEM
     racc (1.7.3)
     rainbow (3.1.1)
     regexp_parser (2.5.0)
-    rexml (3.3.3)
+    rexml (3.3.6)
       strscan
     rspec (3.11.0)
       rspec-core (~> 3.11.0)