diff --git a/Gemfile.lock b/Gemfile.lock
index 0f71766..d0a2979 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -8,7 +8,8 @@ GEM
     parser (2.7.1.4)
       ast (~> 2.4.1)
     rainbow (3.0.0)
-    rexml (3.2.4)
+    rexml (3.3.3)
+      strscan
     rspec (3.9.0)
       rspec-core (~> 3.9.0)
       rspec-expectations (~> 3.9.0)
@@ -31,6 +32,7 @@ GEM
       ruby-progressbar (~> 1.7)
       unicode-display_width (>= 1.4.0, < 2.0)
     ruby-progressbar (1.10.1)
+    strscan (3.1.0)
     unicode-display_width (1.7.0)
 
 PLATFORMS