diff --git a/pkgs/development/libraries/ptex/default.nix b/pkgs/development/libraries/ptex/default.nix
index 5d40ff183e77..a5827fe188c5 100644
--- a/pkgs/development/libraries/ptex/default.nix
+++ b/pkgs/development/libraries/ptex/default.nix
@@ -1,27 +1,21 @@
-{ lib, stdenv, fetchFromGitHub, zlib, cmake, pkg-config }:
+{ lib, stdenv, fetchFromGitHub, zlib, cmake }:
 
 stdenv.mkDerivation rec
 {
   pname = "ptex";
-  version = "2.4.1";
+  version = "2.4.2";
 
   src = fetchFromGitHub {
     owner = "wdas";
     repo = "ptex";
     rev = "v${version}";
-    sha256 = "sha256-TuwgZJHvQUqBEFeZYvzpi+tmXB97SkOairYnuUahtSA=";
+    sha256 = "sha256-PR1ld9rXmL6BK4llznAsD5PNvi3anFMz2i9NDsG95DQ=";
   };
 
   outputs = [ "bin" "dev" "out" "lib" ];
 
   nativeBuildInputs = [ cmake ];
-  buildInputs = [ zlib pkg-config ];
-
-  # Can be removed in the next release
-  # https://github.com/wdas/ptex/pull/42
-  patchPhase = ''
-    echo v${version} >version
-  '';
+  buildInputs = [ zlib ];
 
   meta = with lib; {
     description = "Per-Face Texture Mapping for Production Rendering";