diff --git a/Gemfile.lock b/Gemfile.lock
index 4f8d339..c926333 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -64,7 +64,8 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.5)
+    rexml (3.3.3)
+      strscan
     rouge (3.30.0)
     rubyzip (2.3.2)
     safe_yaml (1.0.5)
@@ -72,6 +73,7 @@ GEM
       ffi (~> 1.9)
     sassc (2.4.0-x64-mingw32)
       ffi (~> 1.9)
+    strscan (3.1.0)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
     tzinfo (2.0.5)