diff --git a/Gemfile.lock b/Gemfile.lock
index f92b252..a47f741 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -39,7 +39,8 @@ GEM
     redis-client (0.22.1)
       connection_pool
     regexp_parser (2.9.1)
-    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)
@@ -100,6 +101,7 @@ GEM
       rack-protection (= 4.0.0)
       sinatra (= 4.0.0)
       tilt (~> 2.0)
+    strscan (3.1.0)
     tilt (2.3.0)
     unicode-display_width (2.5.0)
     webrick (1.8.1)