diff --git a/pkgs/development/python-modules/pillow-simd/default.nix b/pkgs/development/python-modules/pillow-simd/default.nix
index e2ea4c71388..826d9f15252 100644
--- a/pkgs/development/python-modules/pillow-simd/default.nix
+++ b/pkgs/development/python-modules/pillow-simd/default.nix
@@ -1,6 +1,6 @@
 { lib, stdenv, buildPythonPackage, fetchFromGitHub, isPyPy, isPy3k
 , olefile, freetype, libjpeg, zlib, libtiff, libwebp, tcl, lcms2
-, libxcb, tk, libX11, openjpeg, libimagequant, pyroma, numpy
+, libxcb, tk, libX11, openjpeg, libimagequant, pyroma, numpy, defusedxml
 , pytestCheckHook
 }@args:
 
@@ -8,14 +8,14 @@ import ../pillow/generic.nix (rec {
   pname = "Pillow-SIMD";
   # check for release version on https://pypi.org/project/Pillow-SIMD/#history
   # does not match the latest pillow release version!
-  version = "7.0.0.post3";
+  version = "9.0.0.post1";
   disabled = !isPy3k;
 
   src = fetchFromGitHub {
     owner = "uploadcare";
     repo = "pillow-simd";
     rev = "v${version}";
-    sha256 = "1h832xp1bzf951hr4dmjmxqfsv28sx9lr2cq96qdz1c72k40zj1h";
+    sha256 = "sha256-qTZYhgHjVMXqoYl3mG1xVrFaWrPidSY8HlyFQizV27Y=";
   };
 
   meta = with lib; {