diff --git a/Gemfile.lock b/Gemfile.lock
index 6fd5166..89819f3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -180,7 +180,8 @@ GEM
     redcarpet (3.6.0)
     request_store (1.5.1)
       rack (>= 1.4)
-    rexml (3.2.5)
+    rexml (3.3.3)
+      strscan
     sass (3.7.4)
       sass-listen (~> 4.0.0)
     sass-listen (4.0.0)
@@ -202,6 +203,7 @@ GEM
       activesupport (>= 5.2)
       sprockets (>= 3.0.0)
     sqlite3 (1.4.4)
+    strscan (3.1.0)
     thor (1.2.1)
     thread_safe (0.3.6)
     tilt (2.0.11)