diff --git a/Gemfile.lock b/Gemfile.lock
index 76252e3..e645d75 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -114,7 +114,7 @@ GEM
       numerizer (~> 0.1.1)
     coderay (1.1.3)
     colorize (1.1.0)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.7)
     connection_pool (3.0.2)
     counter_culture (2.9.0)
       activerecord (>= 4.2)