diff --git a/Gemfile.lock b/Gemfile.lock
index 90d6474..daa2329 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -98,7 +98,8 @@ GEM
     rb-inotify (0.10.1)
       ffi (~> 1.0)
     redcarpet (3.6.0)
-    rexml (3.2.6)
+    rexml (3.3.3)
+      strscan
     rouge (3.30.0)
     sassc (2.4.0)
       ffi (~> 1.9)
@@ -106,6 +107,7 @@ GEM
     sprockets (4.0.2)
       concurrent-ruby (~> 1.0)
       rack (> 1, < 3)
+    strscan (3.1.0)
     temple (0.10.3)
     thor (1.2.2)
     tilt (2.0.11)