diff --git a/pkgs/development/ruby-modules/bundler/default.nix b/pkgs/development/ruby-modules/bundler/default.nix
index 35b93abda490..43878362bb6d 100644
--- a/pkgs/development/ruby-modules/bundler/default.nix
+++ b/pkgs/development/ruby-modules/bundler/default.nix
@@ -4,8 +4,8 @@ buildRubyGem rec {
   inherit ruby;
   name = "${gemName}-${version}";
   gemName = "bundler";
-  version = "2.3.26";
-  source.sha256 = "sha256-HuU832HnKK2Cxtv/Bs/NhVHVQi6I6GID8OLb6a6Zngk=";
+  version = "2.4.2";
+  source.sha256 = "sha256-mYUOxAWH7hv7Kn521OVI8PyzoO3T6LGPJjAxA07buR8=";
   dontPatchShebangs = true;
 
   passthru.updateScript = writeScript "gem-update-script" ''