diff --git a/Gemfile.lock b/Gemfile.lock
index bf289f5..86c2e1c 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -27,7 +27,7 @@ GEM
     aws-sigv4 (1.2.4)
       aws-eventstream (~> 1, >= 1.0.2)
     coderay (1.1.3)
-    concurrent-ruby (1.1.6)
+    concurrent-ruby (1.3.7)
     diff-lcs (1.3)
     faker (2.19.0)
       i18n (>= 1.6, < 2)