diff --git a/Gemfile.lock b/Gemfile.lock
index ef58a6f..037b0c8 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -262,7 +262,8 @@ GEM
     regexp_parser (2.9.0)
     reline (0.4.3)
       io-console (~> 0.5)
-    rexml (3.2.6)
+    rexml (3.3.6)
+      strscan
     rspec-core (3.13.0)
       rspec-support (~> 3.13.0)
     rspec-expectations (3.13.0)
@@ -334,6 +335,7 @@ GEM
     stringio (3.1.0)
     strong_migrations (1.8.0)
       activerecord (>= 5.2)
+    strscan (3.1.0)
     thor (1.3.1)
     timeout (0.4.1)
     turbo-rails (2.0.5)