diff --git a/Gemfile.lock b/Gemfile.lock
index 7ecd34b..f761cb0 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -39,7 +39,7 @@ GEM
     classifier (1.3.1)
       stemmer (>= 1.0.0)
     coderay (1.1.0)
-    concurrent-ruby (1.3.6)
+    concurrent-ruby (1.3.7)
     connection_pool (3.0.2)
     console (1.15.0)
       fiber-local