diff --git a/Gemfile.lock b/Gemfile.lock
index 7cfff78..d97799b 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -76,7 +76,7 @@ GEM
       coffee-script-source
       execjs
     coffee-script-source (1.12.2)
-    concurrent-ruby (1.0.2)
+    concurrent-ruby (1.0.3)
     contracts (0.14.0)
     crack (0.3.1)
     cucumber (2.4.0)