diff --git a/Gemfile.lock b/Gemfile.lock
index 2e54015de..87e3bcb90 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -595,7 +595,8 @@ GEM
     responders (3.1.1)
       actionpack (>= 5.2)
       railties (>= 5.2)
-    rexml (3.2.6)
+    rexml (3.2.7)
+      strscan (>= 3.0.9)
     rodf (1.2.0)
       builder (>= 3.0)
       rubyzip (>= 1.0)
@@ -767,6 +768,7 @@ GEM
     stringio (3.1.0)
     strong_migrations (1.8.0)
       activerecord (>= 5.2)
+    strscan (3.1.0)
     swd (2.0.3)
       activesupport (>= 3)
       attr_required (>= 0.0.5)