diff --git a/pkgs/servers/nats-server/default.nix b/pkgs/servers/nats-server/default.nix
index 7225f8d11e5..aafbc2d1e5a 100644
--- a/pkgs/servers/nats-server/default.nix
+++ b/pkgs/servers/nats-server/default.nix
@@ -6,16 +6,16 @@
 
 buildGoModule rec {
   pname = "nats-server";
-  version = "2.9.20";
+  version = "2.9.21";
 
   src = fetchFromGitHub {
     owner = "nats-io";
     repo = pname;
     rev = "v${version}";
-    hash = "sha256-RRWn1xPvYkDL+81/JOAW+K8I2ezq+z65KiJPYMrF7Sw=";
+    hash = "sha256-gzwnD9o0lqo1lUw9viSnvjsWSCSmMi2qR9ndtWztMjQ=";
   };
 
-  vendorHash = "sha256-INzCHNr469LajEggVpVZ0Kj0zpe7GwX26af2C/7zx7o=";
+  vendorHash = "sha256-RK5OD1zea4M4/mXjGKhU+igSoE4YaA2/jAL7RFBoouo=";
 
   doCheck = false;