diff --git a/Gemfile.lock b/Gemfile.lock
index 07e64f4..b2b9903 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -57,7 +57,7 @@ GEM
       sshkit (>= 1.9.0)
     capistrano-bundler (2.1.0)
       capistrano (~> 3.1)
-    concurrent-ruby (1.3.2)
+    concurrent-ruby (1.3.3)
     connection_pool (2.4.1)
     crass (1.0.6)
     debug (1.9.2)