diff --git a/Gemfile.lock b/Gemfile.lock
index e7402de..92bf532 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -110,8 +110,7 @@ GEM
     regexp_parser (2.9.0)
     reline (0.4.1)
       io-console (~> 0.5)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     rspec-core (3.12.2)
       rspec-support (~> 3.12.0)
     rspec-expectations (3.12.3)
@@ -179,7 +178,6 @@ GEM
       lint_roller (~> 1.1)
       rubocop-performance (~> 1.21.0)
     stringio (3.1.0)
-    strscan (3.1.0)
     thor (1.3.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)