diff --git a/Gemfile.lock b/Gemfile.lock
index a0391f4..3d99363 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -31,7 +31,7 @@ GEM
     bigdecimal (3.1.8)
     builder (3.3.0)
     coderay (1.1.3)
-    concurrent-ruby (1.3.3)
+    concurrent-ruby (1.3.7)
     connection_pool (2.4.1)
     date (3.3.4)
     diff-lcs (1.5.1)