diff --git a/Gemfile.lock b/Gemfile.lock
index c74e983..1e4938c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -107,7 +107,8 @@ GEM
     rb-fsevent (0.11.0)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rouge (3.26.1)
     ruby2_keywords (0.0.5)
     safe_yaml (1.0.5)
@@ -127,6 +128,7 @@ GEM
       rack-protection (= 3.0.5)
       sinatra (= 3.0.5)
       tilt (~> 2.0)
+    strscan (3.1.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     tilt (2.0.11)