diff --git a/Gemfile.lock b/Gemfile.lock
index df762a0..2d5d1d0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -60,8 +60,7 @@ GEM
     rainbow (3.1.1)
     rake (13.0.6)
     regexp_parser (2.7.0)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)
@@ -102,7 +101,6 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
-    strscan (3.1.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.4.2)