diff --git a/Gemfile.lock b/Gemfile.lock
index 67c8a78..4b857d7 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -29,7 +29,7 @@ GEM
     base64 (0.3.0)
     bigdecimal (4.1.0)
     cgi (0.5.1)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.7)
     connection_pool (3.0.2)
     crack (1.0.1)
       bigdecimal