diff --git a/Gemfile.lock b/Gemfile.lock
index 86ac37d..723fb49 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -322,7 +322,8 @@ GEM
       ffi (~> 1.0)
     regexp_parser (2.5.0)
     require_all (3.0.0)
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rspec-core (3.11.0)
       rspec-support (~> 3.11.0)
     rspec-expectations (3.11.0)
@@ -394,6 +395,7 @@ GEM
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
+    strscan (3.1.0)
     sync (0.5.0)
     term-ansicolor (1.7.1)
       tins (~> 1.0)