diff --git a/Gemfile.lock b/Gemfile.lock
index f211f34..a4ef5a3 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -55,7 +55,7 @@ GEM
     base64 (0.3.0)
     bigdecimal (4.1.2)
     bindata (2.5.1)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.7)
     connection_pool (3.0.2)
     crack (1.0.1)
       bigdecimal