diff --git a/Gemfile.lock b/Gemfile.lock
index 9c012a7..0543b78 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,8 +27,7 @@ GEM
     rainbow (3.1.1)
     rake (12.3.3)
     regexp_parser (2.9.2)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     rspec (3.8.0)
       rspec-core (~> 3.8.0)
       rspec-expectations (~> 3.8.0)
@@ -63,7 +62,6 @@ GEM
     rubocop-rake (0.6.0)
       rubocop (~> 1.0)
     ruby-progressbar (1.13.0)
-    strscan (3.1.0)
     thor (0.20.3)
     unicode-display_width (2.5.0)