diff --git a/Gemfile.lock b/Gemfile.lock
index 8ff5110..c9bef6d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -58,13 +58,15 @@ GEM
     rb-fsevent (0.10.3)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.5)
+    rexml (3.3.3)
+      strscan
     rouge (3.16.0)
     safe_yaml (1.0.5)
     sassc (2.2.1)
       ffi (~> 1.9)
     sassc (2.2.1-x64-mingw32)
       ffi (~> 1.9)
+    strscan (3.1.0)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
     thread_safe (0.3.6)