diff --git a/Gemfile.lock b/Gemfile.lock
index a3d2c60..022cd0e 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -74,7 +74,8 @@ GEM
     rb-fsevent (0.11.2)
     rb-inotify (0.10.1)
       ffi (~> 1.0)
-    rexml (3.2.6)
+    rexml (3.3.3)
+      strscan
     rouge (3.30.0)
     ruby2_keywords (0.0.5)
     rubyzip (2.3.2)
@@ -87,6 +88,7 @@ GEM
     sawyer (0.9.2)
       addressable (>= 2.3.5)
       faraday (>= 0.17.3, < 3)
+    strscan (3.1.0)
     webrick (1.8.1)
 
 PLATFORMS