diff --git a/Gemfile.lock b/Gemfile.lock
index 69a5c11..484e0d3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -151,7 +151,8 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.6)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rouge (4.2.0)
     ruby2_keywords (0.0.5)
     safe_yaml (1.0.5)
@@ -177,6 +178,7 @@ GEM
     sprockets-sass (1.3.1)
       sprockets (~> 2.0)
       tilt (~> 1.1)
+    strscan (3.1.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     tilt (1.4.1)