diff --git a/Gemfile.lock b/Gemfile.lock
index 07f19ad..12d83a2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -49,8 +49,7 @@ GEM
     regexp_parser (2.9.2)
     reline (0.3.3)
       io-console (~> 0.5)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     rspec (3.11.0)
       rspec-core (~> 3.11.0)
       rspec-expectations (~> 3.11.0)
@@ -78,7 +77,6 @@ GEM
     rubocop-ast (1.32.1)
       parser (>= 3.3.1.0)
     ruby-progressbar (1.13.0)
-    strscan (3.1.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.5.0)