diff --git a/Gemfile.lock b/Gemfile.lock
index 8b976a7..3304efb 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -307,8 +307,7 @@ GEM
       io-console (~> 0.5)
     request_store (1.5.1)
       rack (>= 1.4)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     rouge (4.2.0)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
@@ -377,7 +376,6 @@ GEM
     simplecov-html (0.12.3)
     simplecov_json_formatter (0.1.4)
     stringio (3.1.0)
-    strscan (3.1.0)
     thor (1.3.1)
     timeout (0.4.1)
     tzinfo (2.0.6)