diff --git a/Gemfile.lock b/Gemfile.lock
index b7635dd..83b1814 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -335,7 +335,8 @@ GEM
     responders (3.1.1)
       actionpack (>= 5.2)
       railties (>= 5.2)
-    rexml (3.2.6)
+    rexml (3.3.3)
+      strscan
     rolify (6.0.1)
     rouge (4.2.0)
     rspec (3.12.0)
@@ -445,6 +446,7 @@ GEM
       lint_roller (~> 1.1)
       rubocop-performance (~> 1.20.2)
     stringio (3.1.0)
+    strscan (3.1.0)
     temple (0.10.3)
     thor (1.3.1)
     tilt (2.3.0)