1 files changed, 4 insertions, 4 deletions
diff --git a/nixpkgs/pkgs/development/libraries/dlib/default.nix b/nixpkgs/pkgs/development/libraries/dlib/default.nix
index e7cc12e0db5..43ac2530cc1 100644
--- a/nixpkgs/pkgs/development/libraries/dlib/default.nix
+++ b/nixpkgs/pkgs/development/libraries/dlib/default.nix
@@ -2,26 +2,26 @@
 , guiSupport ? false, libX11
 
   # see http://dlib.net/compile.html
-, avxSupport ? true
+, avxSupport ? stdenv.hostPlatform.avxSupport
 , cudaSupport ? true
 }:
 
 stdenv.mkDerivation rec {
   pname = "dlib";
-  version = "19.19";
+  version = "19.21";
 
   src = fetchFromGitHub {
     owner = "davisking";
     repo = "dlib";
     rev ="v${version}";
-    sha256 = "0574p46zf85nx33cam4yqcg20g94kkmrvi5689r1xshprr0szghp";
+    sha256 = "00jwklnl21l3hlvb0bjc6rl3hgi88vxb41dsn4m0kh436c9v0rl3";
   };
 
   postPatch = ''
     rm -rf dlib/external
   '';
 
-  cmakeFlags = [ 
+  cmakeFlags = [
     "-DUSE_DLIB_USE_CUDA=${if cudaSupport then "1" else "0"}"
     "-DUSE_AVX_INSTRUCTIONS=${if avxSupport then "yes" else "no"}" ];