diff --git a/Gemfile.lock b/Gemfile.lock
index 60537c7d..9e57e004 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -161,7 +161,8 @@ 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)
     ruby-enum (0.9.0)
       i18n
@@ -182,6 +183,7 @@ GEM
     sawyer (0.9.2)
       addressable (>= 2.3.5)
       faraday (>= 0.17.3, < 3)
+    strscan (3.1.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)
     tzinfo (2.0.6)