diff --git a/pkgs/development/python-modules/augmax/default.nix b/pkgs/development/python-modules/augmax/default.nix
index 48eb38cad3d2..47a531863ff1 100644
--- a/pkgs/development/python-modules/augmax/default.nix
+++ b/pkgs/development/python-modules/augmax/default.nix
@@ -8,15 +8,14 @@
 
 buildPythonPackage rec {
   pname = "augmax";
-  version = "unstable-2022-02-19";
+  version = "0.3.1";
   format = "setuptools";
 
   src = fetchFromGitHub {
     owner = "khdlr";
     repo = pname;
-    # augmax does not have releases tagged. See https://github.com/khdlr/augmax/issues/5.
-    rev = "3e5d85d6921a1e519987d33f226bc13f61e04d04";
-    sha256 = "046n43v7161w7najzlbi0443q60436xv24nh1mv23yw6psqqhx5i";
+    rev = "refs/tags/v${version}";
+    hash = "sha256-hDNNoE7KVaH3jrXZA4A8f0UoQJPl6KHA3XwMc3Ccohk=";
   };
 
   propagatedBuildInputs = [ einops jax ];