diff --git a/Gemfile.lock b/Gemfile.lock
index fecc72b..0d6430a 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -258,7 +258,8 @@ GEM
       trailblazer-option (>= 0.1.1, < 0.2.0)
       uber (< 0.2.0)
     retriable (3.1.2)
-    rexml (3.2.6)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rouge (2.0.7)
     ruby-macho (2.5.1)
     ruby2_keywords (0.0.5)
@@ -282,6 +283,7 @@ GEM
       xcodeproj (~> 1.21)
     sqlite3 (1.5.4)
       mini_portile2 (~> 2.8.0)
+    strscan (3.1.0)
     terminal-notifier (2.0.0)
     terminal-table (3.0.2)
       unicode-display_width (>= 1.1.1, < 3)