diff --git a/Gemfile.lock b/Gemfile.lock
index 8ceff29..df8125c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -68,7 +68,8 @@ GEM
     rake (13.0.6)
     redis (4.5.1)
     regexp_parser (2.1.1)
-    rexml (3.2.5)
+    rexml (3.3.6)
+      strscan
     rspec (3.10.0)
       rspec-core (~> 3.10.0)
       rspec-expectations (~> 3.10.0)
@@ -112,6 +113,7 @@ GEM
       gli
       hashie
       websocket-driver
+    strscan (3.1.0)
     timecop (0.9.4)
     timers (4.3.3)
     tzinfo (2.0.4)