diff --git a/pkgs/by-name/ra/rabbitmq-server/package.nix b/pkgs/by-name/ra/rabbitmq-server/package.nix
index 0368a6bd2acf..5ae8cd54b76f 100644
--- a/pkgs/by-name/ra/rabbitmq-server/package.nix
+++ b/pkgs/by-name/ra/rabbitmq-server/package.nix
@@ -43,12 +43,12 @@ in
 
 stdenv.mkDerivation (finalAttrs: {
   pname = "rabbitmq-server";
-  version = "4.2.0";
+  version = "4.2.1";
 
   # when updating, consider bumping elixir version in all-packages.nix
   src = fetchurl {
     url = "https://github.com/rabbitmq/rabbitmq-server/releases/download/v${finalAttrs.version}/${finalAttrs.pname}-${finalAttrs.version}.tar.xz";
-    hash = "sha256-zmPo6+z+elyjROLphqw7HxrYzCP83n3//qMzMML1fDw=";
+    hash = "sha256-loZsktSiUexsQQsMxDL4WVdtVsoXp3mEllNzkwglPgM=";
   };
 
   nativeBuildInputs = [