diff --git a/Gemfile.lock b/Gemfile.lock
index 7a413ed..0a0e168 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -244,7 +244,8 @@ GEM
     rainbow (3.0.0)
     rake (13.0.6)
     regexp_parser (2.1.1)
-    rexml (3.2.5)
+    rexml (3.3.4)
+      strscan
     rspec-core (3.10.1)
       rspec-support (~> 3.10.0)
     rspec-expectations (3.10.1)
@@ -324,6 +325,7 @@ GEM
       rubocop-performance (= 1.11.4)
     standardrb (1.0.0)
       standard
+    strscan (3.1.0)
     thor (1.1.0)
     thread_safe (0.3.6)
     tilt (2.0.10)