diff --git a/Gemfile.lock b/Gemfile.lock
index 07ea31092..6f161557c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -152,7 +152,8 @@ GEM
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rouge (3.21.0)
     rspec (3.9.0)
       rspec-core (~> 3.9.0)
@@ -197,6 +198,7 @@ GEM
       json (>= 1.8, < 3)
       simplecov-html (~> 0.10.0)
     simplecov-html (0.10.2)
+    strscan (3.1.0)
     thor (0.19.4)
     thread_safe (0.3.6)
     typhoeus (1.4.0)