diff --git a/Gemfile.lock b/Gemfile.lock
index f5bbb2ce49..ff13b65890 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -436,8 +436,7 @@ GEM
       http-cookie (>= 1.0.2, < 2.0)
       mime-types (>= 1.16, < 4.0)
       netrc (~> 0.8)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     ruby2_keywords (0.0.5)
     rubyzip (2.3.2)
     sass-rails (6.0.0)
@@ -486,7 +485,6 @@ GEM
     spy (1.0.1)
     strong_migrations (1.4.0)
       activerecord (>= 5.2)
-    strscan (3.1.0)
     swd (1.3.0)
       activesupport (>= 3)
       attr_required (>= 0.0.5)