diff --git a/Gemfile.lock b/Gemfile.lock
index 2e4bff5b9..4d50d6474 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -450,8 +450,7 @@ GEM
     responders (3.1.1)
       actionpack (>= 5.2)
       railties (>= 5.2)
-    rexml (3.3.4)
-      strscan
+    rexml (3.3.9)
     rspec (3.13.0)
       rspec-core (~> 3.13.0)
       rspec-expectations (~> 3.13.0)
@@ -576,7 +575,6 @@ GEM
     stringio (3.1.1)
     strong_migrations (1.8.0)
       activerecord (>= 5.2)
-    strscan (3.1.0)
     susy (2.2.14)
       sass (>= 3.3.0, < 3.5)
     sync (0.5.0)