diff --git a/pkgs/development/python-modules/solo-python/default.nix b/pkgs/development/python-modules/solo-python/default.nix
index b0166c303d7..fef12eb963a 100644
--- a/pkgs/development/python-modules/solo-python/default.nix
+++ b/pkgs/development/python-modules/solo-python/default.nix
@@ -2,6 +2,7 @@
 , buildPythonPackage
 , fetchFromGitHub
 , pythonOlder
+, flit
 , click
 , cryptography
 , ecdsa
@@ -15,7 +16,7 @@
 buildPythonPackage rec {
   pname = "solo-python";
   version = "0.1.1";
-  format = "flit";
+  format = "pyproject";
 
   disabled = pythonOlder "3.6";
 
@@ -26,6 +27,10 @@ buildPythonPackage rec {
     hash = "sha256-XVPYr7JwxeZfZ68+vQ7a7MNiAfJ2bvMbM3R1ryVJ+OU=";
   };
 
+  nativeBuildInputs = [
+    flit
+  ];
+
   propagatedBuildInputs = [
     click
     cryptography