diff --git a/pkgs/tools/compression/upx/default.nix b/pkgs/tools/compression/upx/default.nix
index c41553b562d..8c9f7433058 100644
--- a/pkgs/tools/compression/upx/default.nix
+++ b/pkgs/tools/compression/upx/default.nix
@@ -2,31 +2,21 @@
 
 stdenv.mkDerivation rec {
   name = "upx-${version}";
-  version = "3.93";
-  src = fetchFromGitHub {
-    owner = "upx";
-    repo = "upx";
-    rev = "v${version}";
-    sha256 = "03ah23q85hx3liqyyj4vm8vip2d47bijsimagqd39q762a2rin3i";
+  version = "3.94";
+  src = fetchurl {
+    url = "https://github.com/upx/upx/releases/download/v3.94/upx-3.94-src.tar.xz";
+    sha256 = "08anybdliqsbsl6x835iwzljahnm9i7v26icdjkcv33xmk6p5vw1";
   };
 
   buildInputs = [ ucl zlib perl ];
 
-  lzmaSrc = fetchFromGitHub {
-    owner = "upx";
-    repo = "upx-lzma-sdk";
-    rev = "v${version}";
-    sha256 = "16vj1c5bl04pzma0sr4saqk80y2iklyslzmrb4rm66aifa365zqj";
-  };
-
   preConfigure = "
     export UPX_UCLDIR=${ucl}
-    cp -a $lzmaSrc/* src/lzma-sdk
-    export UPX_LZMADIR=`pwd`/src/lzma-sdk
     cd src
   ";
 
-  buildPhase = "make CHECK_WHITESPACE=true";
+  makeFlags = [ "CHECK_WHITESPACE=true" ];
+
   installPhase = "mkdir -p $out/bin ; cp upx.out $out/bin/upx";
 
   meta = {