diff --git a/pkgs/development/python-modules/bitlist/default.nix b/pkgs/development/python-modules/bitlist/default.nix
index e1129f40602f..1e7f24144645 100644
--- a/pkgs/development/python-modules/bitlist/default.nix
+++ b/pkgs/development/python-modules/bitlist/default.nix
@@ -9,14 +9,14 @@
 
 buildPythonPackage rec {
   pname = "bitlist";
-  version = "0.8.0";
-  format = "setuptools";
+  version = "1.0.1";
+  format = "pyproject";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-43Oh1ERGsW12HOqpbIa7rzLKrP9tIjckZhHwZSmBypE=";
+    hash = "sha256-rpXQKkV2RUuYza+gfpGEH3kFJ+hjuNGKV2i46eXQUUI=";
   };
 
   propagatedBuildInputs = [
@@ -33,8 +33,8 @@ buildPythonPackage rec {
   ];
 
   postPatch = ''
-    substituteInPlace setup.cfg \
-      --replace " --cov=bitlist --cov-report term-missing" ""
+    substituteInPlace pyproject.toml \
+      --replace "--doctest-modules --ignore=docs --cov=bitlist --cov-report term-missing" ""
   '';
 
   meta = with lib; {
diff --git a/pkgs/development/python-modules/fe25519/default.nix b/pkgs/development/python-modules/fe25519/default.nix
index 216a84b9ec6a..4c2d10278e0c 100644
--- a/pkgs/development/python-modules/fe25519/default.nix
+++ b/pkgs/development/python-modules/fe25519/default.nix
@@ -4,21 +4,20 @@
 , fetchPypi
 , fountains
 , parts
-, nose
 , pytestCheckHook
 , pythonOlder
 }:
 
 buildPythonPackage rec {
   pname = "fe25519";
-  version = "1.2.0";
-  format = "setuptools";
+  version = "1.3.0";
+  format = "pyproject";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-Hzdt8932WonJAaQPtL346JFPqxFXkNW4XQvbQlSoJJE=";
+    hash = "sha256-/grXAiWERDeTCWgFnNC1Ok8D5I9MBlwd1501TW0yK5c=";
   };
 
   propagatedBuildInputs = [
@@ -28,13 +27,12 @@ buildPythonPackage rec {
   ];
 
   checkInputs = [
-    nose
     pytestCheckHook
   ];
 
   postPatch = ''
-    substituteInPlace setup.cfg \
-      --replace " --cov=fe25519 --cov-report term-missing" ""
+    substituteInPlace pyproject.toml \
+      --replace "--doctest-modules --ignore=docs --cov=fe25519 --cov-report term-missing" ""
   '';
 
   pythonImportsCheck = [
diff --git a/pkgs/development/python-modules/fountains/default.nix b/pkgs/development/python-modules/fountains/default.nix
index e62eedf0468c..1d65c4e643c8 100644
--- a/pkgs/development/python-modules/fountains/default.nix
+++ b/pkgs/development/python-modules/fountains/default.nix
@@ -7,14 +7,14 @@
 
 buildPythonPackage rec {
   pname = "fountains";
-  version = "1.3.0";
-  format = "setuptools";
+  version = "2.0.0";
+  format = "pyproject";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    sha256 = "sha256-c6nw22UtAREYZp0XCEZE6p7GpRvSLukq5y0c9KvVf9w=";
+    hash = "sha256-9ASOgqkE1vwCKGAZXEJaHoABMXomIWTGv3jAsNssdsU=";
   };
 
   propagatedBuildInputs = [
diff --git a/pkgs/development/python-modules/ge25519/default.nix b/pkgs/development/python-modules/ge25519/default.nix
index 22c96920be6c..f82e2878086a 100644
--- a/pkgs/development/python-modules/ge25519/default.nix
+++ b/pkgs/development/python-modules/ge25519/default.nix
@@ -4,7 +4,6 @@
 , fe25519
 , fetchPypi
 , fountains
-, nose
 , parts
 , pytestCheckHook
 , pythonOlder
@@ -12,14 +11,14 @@
 
 buildPythonPackage rec {
   pname = "ge25519";
-  version = "1.2.0";
-  format = "setuptools";
+  version = "1.3.0";
+  format = "pyproject";
 
   disabled = pythonOlder "3.7";
 
   src = fetchPypi {
     inherit pname version;
-    hash = "sha256-8GsNY62SusUmQcaqlhKOPHbd0jvZulCaxMxeob37JJM=";
+    hash = "sha256-y9Nv59pLWk1kRjZG3EmalT34Mjx7RLZ4WkvJlRrK5LI=";
   };
 
   propagatedBuildInputs = [
@@ -30,16 +29,14 @@ buildPythonPackage rec {
   ];
 
   checkInputs = [
-    nose
     pytestCheckHook
   ];
 
   postPatch = ''
-    substituteInPlace setup.cfg \
-      --replace " --cov=ge25519 --cov-report term-missing" ""
+    substituteInPlace pyproject.toml \
+      --replace "--doctest-modules --ignore=docs --cov=ge25519 --cov-report term-missing" ""
   '';
 
-
   pythonImportsCheck = [
     "ge25519"
   ];