diff --git a/Gemfile.lock b/Gemfile.lock
index c4f26bfa..69851b3e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -67,7 +67,8 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     regexp_parser (2.9.0)
-    rexml (3.2.6)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)
@@ -115,6 +116,7 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
+    strscan (3.1.0)
     thor (1.2.2)
     unicode-display_width (2.5.0)