diff --git a/Gemfile.lock b/Gemfile.lock
index ee54080..b5a502a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -24,7 +24,8 @@ GEM
     redlock (1.3.2)
       redis (>= 3.0.0, < 6.0)
     regexp_parser (2.1.1)
-    rexml (3.2.5)
+    rexml (3.3.3)
+      strscan
     rspec (3.10.0)
       rspec-core (~> 3.10.0)
       rspec-expectations (~> 3.10.0)
@@ -53,6 +54,7 @@ GEM
       rubocop (~> 1.19)
     ruby-progressbar (1.11.0)
     ruby2_keywords (0.0.5)
+    strscan (3.1.0)
     unicode-display_width (2.1.0)
 
 PLATFORMS