diff --git a/Gemfile.lock b/Gemfile.lock
index e4bb71c..6ac91ac 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -20,7 +20,8 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     regexp_parser (2.2.1)
-    rexml (3.2.5)
+    rexml (3.3.3)
+      strscan
     rspec (3.11.0)
       rspec-core (~> 3.11.0)
       rspec-expectations (~> 3.11.0)
@@ -48,6 +49,7 @@ GEM
     rubocop-rspec (2.8.0)
       rubocop (~> 1.19)
     ruby-progressbar (1.11.0)
+    strscan (3.1.0)
     unicode-display_width (2.1.0)
 
 PLATFORMS