diff --git a/pkgs/development/libraries/assimp/default.nix b/pkgs/development/libraries/assimp/default.nix
index 804c97ffd747c..81d9e54de435d 100644
--- a/pkgs/development/libraries/assimp/default.nix
+++ b/pkgs/development/libraries/assimp/default.nix
@@ -1,29 +1,28 @@
-{ lib, stdenv, fetchFromGitHub, fetchpatch, cmake, boost, zlib }:
+{ lib
+, stdenv
+, fetchFromGitHub
+, cmake
+, boost
+, zlib
+}:
 
 stdenv.mkDerivation rec {
   pname = "assimp";
-  version = "5.1.3";
+  version = "5.2.5";
   outputs = [ "out" "lib" "dev" ];
 
   src = fetchFromGitHub{
     owner = "assimp";
     repo = "assimp";
     rev = "v${version}";
-    hash = "sha256-GNSfaP8O5IsjGwtC3DFaV4OiMMUXIcmHmz+5TCT/HP8=";
+    hash = "sha256-vQx+PaET5mlvvIGHk6pEnZvM3qw8DiC3hd1Po6OAHxQ=";
   };
 
-  patches = [
-    # Fix include directory with split outputs
-    # https://github.com/assimp/assimp/pull/4337
-    (fetchpatch {
-      url = "https://github.com/assimp/assimp/commit/5dcaf445c3da079cf43890a0688428a7e1de0b30.patch";
-      sha256 = "sha256-KwqTAoDPkhFq469+VaUuGoqfymu2bWLG9W3BvFvyU5I=";
-    })
-  ];
-
   nativeBuildInputs = [ cmake ];
   buildInputs = [ boost zlib ];
 
+  cmakeFlags = [ "-DASSIMP_BUILD_ASSIMP_TOOLS=ON" ];
+
   meta = with lib; {
     description = "A library to import various 3D model formats";
     homepage = "https://www.assimp.org/";