diff --git a/Gemfile.lock b/Gemfile.lock
index 8edf7386..33c0e748 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -218,7 +218,8 @@ GEM
       trailblazer-option (>= 0.1.1, < 0.2.0)
       uber (< 0.2.0)
     retriable (3.1.2)
-    rexml (3.2.6)
+    rexml (3.2.7)
+      strscan (>= 3.0.9)
     rouge (2.0.7)
     ruby2_keywords (0.0.5)
     rubyzip (2.3.2)
@@ -234,6 +235,7 @@ GEM
     simctl (1.6.10)
       CFPropertyList
       naturally
+    strscan (3.1.0)
     syntax_tree (6.2.0)
       prettier_print (>= 1.2.0)
     syntax_tree-haml (4.0.3)