diff --git a/Gemfile.lock b/Gemfile.lock
index 11702cf..3b863a0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -67,7 +67,8 @@ GEM
     redis-client (0.12.2)
       connection_pool
     regexp_parser (2.7.0)
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rspec (3.12.0)
       rspec-core (~> 3.12.0)
       rspec-expectations (~> 3.12.0)
@@ -108,6 +109,7 @@ GEM
       simplecov_json_formatter (~> 0.1)
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
+    strscan (3.1.0)
     tzinfo (2.0.6)
       concurrent-ruby (~> 1.0)
     unicode-display_width (2.4.2)