diff --git a/pkgs/tools/compression/dtrx/default.nix b/pkgs/tools/compression/dtrx/default.nix
index 5a32db7c050e..074da03956dc 100644
--- a/pkgs/tools/compression/dtrx/default.nix
+++ b/pkgs/tools/compression/dtrx/default.nix
@@ -21,20 +21,15 @@
 
 python3Packages.buildPythonApplication rec {
   pname = "dtrx";
-  version = "8.5.0";
+  version = "8.5.1";
 
   src = fetchFromGitHub {
     owner = "dtrx-py";
     repo = "dtrx";
     rev = "refs/tags/${version}";
-    sha256 = "sha256-jx2IHa7Ztg8Dbwgm8mSJQKtNpg0sg5axGssBMTAMDI0=";
+    sha256 = "sha256-KOHafmvl17IABlcBuE7isHVCIYRbA68Dna6rgiiWlkQ=";
   };
 
-  # https://github.com/dtrx-py/dtrx/issues/45
-  postPatch = ''
-    sed -i "s/platform==unsupported/# platform==unsupported/" setup.cfg
-  '';
-
   postInstall =
     let
       archivers = lib.makeBinPath (