diff --git a/Gemfile.lock b/Gemfile.lock
index f8c39cd..40bd134 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -56,7 +56,8 @@ GEM
     rake (13.0.6)
     rdoc (6.3.3)
     regexp_parser (2.3.1)
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rspec (3.11.0)
       rspec-core (~> 3.11.0)
       rspec-expectations (~> 3.11.0)
@@ -89,6 +90,7 @@ GEM
     ruby2_keywords (0.0.5)
     sdoc (2.3.1)
       rdoc (>= 5.0, < 6.4.0)
+    strscan (3.1.0)
     tzinfo (2.0.4)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.1.0)
diff --git a/vendor/cache/rexml-3.2.5.gem b/vendor/cache/rexml-3.2.5.gem
deleted file mode 100644
index 5680fec..0000000
Binary files a/vendor/cache/rexml-3.2.5.gem and /dev/null differ
diff --git a/vendor/cache/rexml-3.2.8.gem b/vendor/cache/rexml-3.2.8.gem
new file mode 100644
index 0000000..293c1aa
Binary files /dev/null and b/vendor/cache/rexml-3.2.8.gem differ
diff --git a/vendor/cache/strscan-3.1.0.gem b/vendor/cache/strscan-3.1.0.gem
new file mode 100644
index 0000000..e7bd707
Binary files /dev/null and b/vendor/cache/strscan-3.1.0.gem differ