diff --git a/pkgs/development/python-modules/chex/default.nix b/pkgs/development/python-modules/chex/default.nix
index 803c352c7154..3f52a6ac3311 100644
--- a/pkgs/development/python-modules/chex/default.nix
+++ b/pkgs/development/python-modules/chex/default.nix
@@ -1,40 +1,43 @@
 {
   lib,
   buildPythonPackage,
-  pythonOlder,
   fetchFromGitHub,
+
+  # build-system
   setuptools,
+
+  # dependencies
   absl-py,
-  cloudpickle,
-  dm-tree,
   jax,
   jaxlib,
   numpy,
-  pytestCheckHook,
   toolz,
   typing-extensions,
+
+  # tests
+  cloudpickle,
+  dm-tree,
+  pytestCheckHook,
 }:
 
 buildPythonPackage rec {
   pname = "chex";
-  version = "0.1.86";
+  version = "0.1.87";
   pyproject = true;
 
-  disabled = pythonOlder "3.9";
-
   src = fetchFromGitHub {
     owner = "deepmind";
     repo = "chex";
     rev = "refs/tags/v${version}";
-    hash = "sha256-Z5Ns4fG5pC99I4xdGjDMKX6YZpTtd1y0TWcIOtr7dug=";
+    hash = "sha256-TPh7XLWHk0y/VLXxHLANUiDmfveHPeMLks9QKf16doo=";
   };
 
   build-system = [ setuptools ];
 
   dependencies = [
     absl-py
-    jaxlib
     jax
+    jaxlib
     numpy
     toolz
     typing-extensions
@@ -48,11 +51,11 @@ buildPythonPackage rec {
     pytestCheckHook
   ];
 
-  meta = with lib; {
+  meta = {
     description = "Chex is a library of utilities for helping to write reliable JAX code";
     homepage = "https://github.com/deepmind/chex";
     changelog = "https://github.com/google-deepmind/chex/releases/tag/v${version}";
-    license = licenses.asl20;
-    maintainers = with maintainers; [ ndl ];
+    license = lib.licenses.asl20;
+    maintainers = with lib.maintainers; [ ndl ];
   };
 }