diff --git a/Gemfile.lock b/Gemfile.lock
index 3c573a2..24eb046 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -36,7 +36,7 @@ GEM
     rainbow (3.1.1)
     rake (12.3.3)
     regexp_parser (2.9.2)
-    rexml (3.3.4)
+    rexml (3.3.6)
       strscan
     rspec (3.9.0)
       rspec-core (~> 3.9.0)