diff --git a/Gemfile.lock b/Gemfile.lock
index b0e46da..bff1e22 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -79,8 +79,7 @@ GEM
     regexp_parser (2.9.2)
     reline (0.5.8)
       io-console (~> 0.5)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     rspec (3.8.0)
       rspec-core (~> 3.8.0)
       rspec-expectations (~> 3.8.0)
@@ -133,7 +132,6 @@ GEM
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
     stringio (3.1.0)
-    strscan (3.1.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.5.0)
diff --git a/vendor/cache/rexml-3.3.6.gem b/vendor/cache/rexml-3.3.6.gem
deleted file mode 100644
index bf6b6fd..0000000
Binary files a/vendor/cache/rexml-3.3.6.gem and /dev/null differ
diff --git a/vendor/cache/rexml-3.3.9.gem b/vendor/cache/rexml-3.3.9.gem
new file mode 100644
index 0000000..2a9931d
Binary files /dev/null and b/vendor/cache/rexml-3.3.9.gem differ
diff --git a/vendor/cache/strscan-3.1.0.gem b/vendor/cache/strscan-3.1.0.gem
deleted file mode 100644
index e7bd707..0000000
Binary files a/vendor/cache/strscan-3.1.0.gem and /dev/null differ