diff --git a/pkgs/development/libraries/libwebsockets/default.nix b/pkgs/development/libraries/libwebsockets/default.nix
index 732a529c21f..ddafc9bc659 100644
--- a/pkgs/development/libraries/libwebsockets/default.nix
+++ b/pkgs/development/libraries/libwebsockets/default.nix
@@ -17,6 +17,7 @@ let
     nativeBuildInputs = [ cmake ];
 
     cmakeFlags = [ "-DLWS_WITH_PLUGINS=ON" ];
+    NIX_CFLAGS_COMPILE = "-Wno-error=unused-but-set-variable";
 
     meta = with stdenv.lib; {
       description = "Light, portable C library for websockets";
@@ -39,9 +40,12 @@ rec {
   };
 
   libwebsockets_3_2 = generic {
-    version = "3.2.0";
-    sha256 = "0ac5755h3w1pl6cznqbvg63dwkqy544fqlhvqyp7s11hgs7jx6l8";
+    version = "3.2.2";
+    sha256 = "0m1kn4p167jv63zvwhsvmdn8azx3q7fkk8qc0fclwyps2scz6dna";
   };
 
-  libwebsockets = libwebsockets_3_2;
+  libwebsockets_4_0 = generic {
+    version = "4.0.1";
+    sha256 = "1pf7km0w5q7dqlwcwqizdpfqgg10prfq8g2c093f5nghwsfv8mmf";
+  };
 }
diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 688bc51bc2a..1532feba44f 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -4929,7 +4929,8 @@ in
   inherit (callPackages ../development/libraries/libwebsockets { })
     libwebsockets_3_1
     libwebsockets_3_2
-    libwebsockets;
+    libwebsockets_4_0;
+  libwebsockets = libwebsockets_3_2;
 
   lidarr = callPackage ../servers/lidarr { };