diff --git a/Gemfile.lock b/Gemfile.lock
index a414edaa..3445ad32 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -26,7 +26,7 @@ GEM
     bigdecimal (3.3.1)
     builder (3.3.0)
     coderay (1.1.3)
-    concurrent-ruby (1.3.4)
+    concurrent-ruby (1.3.7)
     crack (0.4.5)
       rexml
     diff-lcs (1.5.0)