diff --git a/Gemfile.lock b/Gemfile.lock
index 20e595d954..6ac2df6154 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -565,7 +565,8 @@ GEM
     responders (3.0.1)
       actionpack (>= 5.0)
       railties (>= 5.0)
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rotp (6.2.0)
     rpam2 (4.0.2)
     rqrcode (2.1.2)
@@ -679,6 +680,7 @@ GEM
       redlock (~> 1.0)
     strong_migrations (0.7.9)
       activerecord (>= 5)
+    strscan (3.1.0)
     swd (1.3.0)
       activesupport (>= 3)
       attr_required (>= 0.0.5)