diff --git a/Gemfile.lock b/Gemfile.lock
index 71470c6..3e46cdb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -55,7 +55,8 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     regexp_parser (2.1.1)
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rspec (3.10.0)
       rspec-core (~> 3.10.0)
       rspec-expectations (~> 3.10.0)
@@ -84,6 +85,7 @@ GEM
       parser (>= 2.7.1.5)
     ruby-progressbar (1.11.0)
     shellany (0.0.1)
+    strscan (3.1.0)
     thor (1.1.0)
     unicode-display_width (1.7.0)
     yard (0.9.26)