diff --git a/Gemfile.lock b/Gemfile.lock
index d7e4074..5ee45db 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -258,8 +258,7 @@ GEM
       trailblazer-option (>= 0.1.1, < 0.2.0)
       uber (< 0.2.0)
     retriable (3.1.2)
-    rexml (3.3.6)
-      strscan
+    rexml (3.3.9)
     rouge (2.0.7)
     ruby-macho (2.5.1)
     ruby2_keywords (0.0.5)
@@ -283,7 +282,6 @@ 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)