diff --git a/Gemfile.lock b/Gemfile.lock
index fd8b3c64d2..30549a4285 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -312,7 +312,8 @@ GEM
     responders (3.1.0)
       actionpack (>= 5.2)
       railties (>= 5.2)
-    rexml (3.2.6)
+    rexml (3.3.3)
+      strscan
     roo (2.10.0)
       nokogiri (~> 1)
       rubyzip (>= 1.3.0, < 3.0.0)
@@ -388,6 +389,7 @@ GEM
       actionpack (>= 5.2)
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
+    strscan (3.1.0)
     sunspot (2.6.0)
       pr_geohash (~> 1.0)
       rsolr (>= 1.1.1, < 3)