diff --git a/pkgs/development/libraries/libwebsockets/default.nix b/pkgs/development/libraries/libwebsockets/default.nix
index 777beb9bc14b..15bf77d2fc68 100644
--- a/pkgs/development/libraries/libwebsockets/default.nix
+++ b/pkgs/development/libraries/libwebsockets/default.nix
@@ -1,4 +1,11 @@
-{ fetchFromGitHub, lib, stdenv, cmake, openssl, zlib, libuv }:
+{ lib
+, stdenv
+, fetchFromGitHub
+, cmake
+, openssl
+, zlib
+, libuv
+}:
 
 let
   generic = { version, sha256 }: stdenv.mkDerivation rec {
@@ -64,4 +71,9 @@ in {
     version = "4.2.1";
     sha256 = "sha256-C+WGfNF4tAgbp/7aRraBgjNOe4I5ihm+8CGelXzfxbU=";
   };
+
+  libwebsockets_4_3 = generic {
+    version = "4.3.0";
+    sha256 = "13lxb487mqlzbsbv6fbj50r1717mfwdy87ps592lgfy3307yqpr4";
+  };
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 83e3dba01778..7e62ae437e32 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -7315,8 +7315,9 @@ with pkgs;
   inherit (callPackages ../development/libraries/libwebsockets { })
     libwebsockets_3_1
     libwebsockets_3_2
-    libwebsockets_4_2;
-  libwebsockets = libwebsockets_4_2;
+    libwebsockets_4_2
+    libwebsockets_4_3;
+  libwebsockets = libwebsockets_4_3;
 
   licensee = callPackage ../tools/package-management/licensee { };