diff --git a/Gemfile.lock b/Gemfile.lock
index 5e620c17..53e26b4f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -30,7 +30,7 @@ GEM
     base64 (0.3.0)
     bigdecimal (4.1.2)
     coderay (1.1.3)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.7)
     connection_pool (3.0.2)
     crack (1.0.1)
       bigdecimal