diff --git a/Gemfile.lock b/Gemfile.lock
index 41b693fbca..b8a900ce0d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -249,7 +249,8 @@ GEM
       trailblazer-option (>= 0.1.1, < 0.2.0)
       uber (< 0.2.0)
     retriable (3.1.2)
-    rexml (3.2.5)
+    rexml (3.2.8)
+      strscan (>= 3.0.9)
     rouge (2.0.7)
     ruby-macho (2.5.1)
     ruby2_keywords (0.0.5)
@@ -267,6 +268,7 @@ GEM
       naturally
     sqlite3 (1.6.0)
       mini_portile2 (~> 2.8.0)
+    strscan (3.1.0)
     terminal-notifier (2.0.0)
     terminal-table (1.8.0)
       unicode-display_width (~> 1.1, >= 1.1.1)