diff --git a/pkgs/development/python-modules/asn1tools/default.nix b/pkgs/development/python-modules/asn1tools/default.nix
index bba82425cc05..9168d9dcb43f 100644
--- a/pkgs/development/python-modules/asn1tools/default.nix
+++ b/pkgs/development/python-modules/asn1tools/default.nix
@@ -6,17 +6,21 @@
 , prompt-toolkit
 , pyparsing
 , python
+, pythonOlder
 }:
 
 buildPythonPackage rec {
   pname = "asn1tools";
-  version = "0.163.0";
+  version = "0.164.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.8";
 
   src = fetchFromGitHub {
     owner = "eerimoq";
     repo = "asn1tools";
-    rev = "v${version}";
-    sha256 = "sha256-sbwwbwkhlZvCb2emuw1FTBj5pnv9SOtHpAcYPSQqIvM=";
+    rev = version;
+    hash= "sha256-sbwwbwkhlZvCb2emuw1FTBj5pnv9SOtHpAcYPSQqIvM=";
   };
 
   propagatedBuildInputs = [
@@ -30,7 +34,9 @@ buildPythonPackage rec {
     ${python.interpreter} setup.py test
   '';
 
-  pythonImportsCheck = [ "asn1tools" ];
+  pythonImportsCheck = [
+    "asn1tools"
+  ];
 
   meta = with lib; {
     description = "ASN.1 parsing, encoding and decoding";