diff --git a/pkgs/meteocat-exporter/default.nix b/pkgs/meteocat-exporter/default.nix
index 5bc4f09..470d658 100644
--- a/pkgs/meteocat-exporter/default.nix
+++ b/pkgs/meteocat-exporter/default.nix
@@ -1,9 +1,11 @@
 { python3Packages, lib }:
 
-python3Packages.buildPythonApplication rec {
+python3Packages.buildPythonApplication {
   pname = "meteocat-exporter";
   version = "1.0";
 
+  pyproject = true;
+
   src = ./.;
 
   doCheck = false;
diff --git a/pkgs/upc-qaire-exporter/default.nix b/pkgs/upc-qaire-exporter/default.nix
index b5c14cb..ea3dc89 100644
--- a/pkgs/upc-qaire-exporter/default.nix
+++ b/pkgs/upc-qaire-exporter/default.nix
@@ -1,9 +1,11 @@
 { python3Packages, lib }:
 
-python3Packages.buildPythonApplication rec {
+python3Packages.buildPythonApplication {
   pname = "upc-qaire-exporter";
   version = "1.0";
 
+  pyproject = true;
+
   src = ./.;
 
   doCheck = false;