diff --git a/Gemfile.lock b/Gemfile.lock
index dc00ae7..1769790 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -9,7 +9,7 @@ GEM
   specs:
     ast (2.4.2)
     coderay (1.1.3)
-    concurrent-ruby (1.1.10)
+    concurrent-ruby (1.2.0)
     diff-lcs (1.5.0)
     dry-inflector (0.2.1)
     faker (3.1.0)