diff --git a/Gemfile.lock b/Gemfile.lock
index 777236f5..a8574423 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -32,7 +32,7 @@ GEM
     base64 (0.3.0)
     bigdecimal (4.1.2)
     builder (3.3.0)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.7)
     connection_pool (3.0.2)
     crass (1.0.6)
     drb (2.2.3)