diff --git a/pkgs/development/python-modules/primer3/default.nix b/pkgs/development/python-modules/primer3/default.nix
index 0d5ec7d98f32..84068a9d9671 100644
--- a/pkgs/development/python-modules/primer3/default.nix
+++ b/pkgs/development/python-modules/primer3/default.nix
@@ -5,11 +5,15 @@
 , cython
 , gcc
 , click
+, pythonOlder
 }:
 
 buildPythonPackage rec {
   pname = "primer3";
   version = "2.0.0";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
 
   src = fetchFromGitHub {
     owner = "libnano";