diff --git a/Gemfile.lock b/Gemfile.lock
index 2b4378a..08901de 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -109,7 +109,8 @@ GEM
     rb-fsevent (0.10.4)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.4)
+    rexml (3.3.6)
+      strscan
     rouge (3.23.0)
     rubyzip (2.3.0)
     safe_yaml (1.0.5)
@@ -118,6 +119,7 @@ GEM
     sawyer (0.8.2)
       addressable (>= 2.3.5)
       faraday (> 0.8, < 2.0)
+    strscan (3.1.0)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)
     thread_safe (0.3.6)