diff --git a/pkgs/servers/http/nginx/mainline.nix b/pkgs/servers/http/nginx/mainline.nix
index 80e56d1bf0f0..1b63b06f2cb4 100644
--- a/pkgs/servers/http/nginx/mainline.nix
+++ b/pkgs/servers/http/nginx/mainline.nix
@@ -1,6 +1,6 @@
 { callPackage, ... }@args:
 
 callPackage ./generic.nix args {
-  version = "1.21.1";
-  sha256 = "0q2m2pd9x287py54kp49ys5pwnn0j17x7jjl0cx1c5916h8h7fk8";
+  version = "1.21.3";
+  sha256 = "0nhps7igdqcpcy1r8677ar807rfclpylmz3y858a678m1np4lxql";
 }