diff --git a/pkgs/development/python-modules/chex/default.nix b/pkgs/development/python-modules/chex/default.nix
index bb873f2c3bfd..a06cb4ec84bb 100644
--- a/pkgs/development/python-modules/chex/default.nix
+++ b/pkgs/development/python-modules/chex/default.nix
@@ -12,16 +12,14 @@
 
 buildPythonPackage rec {
   pname = "chex";
-  # As of 2021-12-29, the latest official version has broken tests with jax 0.2.26:
-  # `AttributeError: module 'jax.interpreters.xla' has no attribute 'xb'`
-  version = "unstable-2021-12-16";
+  version = "0.1.2";
   format = "setuptools";
 
   src = fetchFromGitHub {
     owner = "deepmind";
     repo = pname;
-    rev = "5adc10e0b4218f8ec775567fca38b68bbad42a3a";
-    sha256 = "00xib6zv9pwid2q7wcr109qj3fa3g3b852skz8444kw7r0qxy7z3";
+    rev = "v${version}";
+    hash = "sha256-NtZYOHByKBcKmhRaNULwaQqxfoPRmgbtJ3cFHNfy4E8=";
   };
 
   propagatedBuildInputs = [