diff --git a/pkgs/development/python-modules/snowflake-connector-python/default.nix b/pkgs/development/python-modules/snowflake-connector-python/default.nix
index 880eab4629c..f0299b231b0 100644
--- a/pkgs/development/python-modules/snowflake-connector-python/default.nix
+++ b/pkgs/development/python-modules/snowflake-connector-python/default.nix
@@ -21,7 +21,7 @@
 buildPythonPackage rec {
   pname = "snowflake-connector-python";
   version = "2.9.0";
-  format = "setuptools";
+  format = "pyproject";
 
   disabled = pythonOlder "3.7";
 
@@ -30,6 +30,12 @@ buildPythonPackage rec {
     hash = "sha256-dVGyQEsmhQ+xLGIy0BW6XRCtsTsJHjef6Lg2ZJL2JLg=";
   };
 
+  postPatch = ''
+    substituteInPlace setup.cfg \
+      --replace "charset_normalizer>=2,<3" "charset_normalizer" \
+      --replace "pyOpenSSL>=16.2.0,<23.0.0" "pyOpenSSL"
+  '';
+
   propagatedBuildInputs = [
     asn1crypto
     certifi
@@ -47,12 +53,6 @@ buildPythonPackage rec {
     typing-extensions
   ];
 
-  postPatch = ''
-    substituteInPlace setup.cfg \
-      --replace "pyOpenSSL>=16.2.0,<23.0.0" "pyOpenSSL" \
-      --replace "charset-normalizer~=2.0.0" "charset_normalizer>=2"
-  '';
-
   # Tests require encrypted secrets, see
   # https://github.com/snowflakedb/snowflake-connector-python/tree/master/.github/workflows/parameters
   doCheck = false;