diff --git a/Gemfile.lock b/Gemfile.lock
index 4f4ff1f5..36b3c8ec 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -320,7 +320,8 @@ GEM
     responders (2.4.0)
       actionpack (>= 4.2.0, < 5.3)
       railties (>= 4.2.0, < 5.3)
-    rexml (3.2.5)
+    rexml (3.3.6)
+      strscan
     rspec (3.7.0)
       rspec-core (~> 3.7.0)
       rspec-expectations (~> 3.7.0)
@@ -384,6 +385,7 @@ GEM
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
+    strscan (3.1.0)
     temple (0.8.0)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)