diff --git a/pkgs/development/python-modules/cryptodatahub/default.nix b/pkgs/development/python-modules/cryptodatahub/default.nix
index ba5d3a0fcf1c..113c60d85940 100644
--- a/pkgs/development/python-modules/cryptodatahub/default.nix
+++ b/pkgs/development/python-modules/cryptodatahub/default.nix
@@ -5,43 +5,38 @@
   beautifulsoup4,
   buildPythonPackage,
   fetchFromGitLab,
-  pathlib2,
   pyfakefs,
   python-dateutil,
   pythonOlder,
   setuptools,
-  six,
+  setuptools-scm,
   unittestCheckHook,
   urllib3,
 }:
 
 buildPythonPackage rec {
   pname = "cryptodatahub";
-  version = "0.12.5";
+  version = "1.0.0";
   pyproject = true;
 
-  disabled = pythonOlder "3.7";
+  disabled = pythonOlder "3.9";
 
   src = fetchFromGitLab {
     owner = "coroner";
     repo = "cryptodatahub";
     rev = "refs/tags/v${version}";
-    hash = "sha256-jYMzvh4tgfLS7Za0MYHbWbczptAvENfzfTEV9Drlfto=";
+    hash = "sha256-taYpSYkfucc9GQpVDiAZgCt/D3Akld20LkFEhsdKH0Q=";
   };
 
-  postPatch = ''
-    substituteInPlace requirements.txt  \
-      --replace-fail "attrs>=20.3.0,<22.0.1" "attrs>=20.3.0"
-  '';
-
-  build-system = [ setuptools ];
+  build-system = [
+    setuptools
+    setuptools-scm
+  ];
 
   dependencies = [
     asn1crypto
     attrs
-    pathlib2
     python-dateutil
-    six
     urllib3
   ];
 
diff --git a/pkgs/development/python-modules/cryptolyzer/default.nix b/pkgs/development/python-modules/cryptolyzer/default.nix
index c132fb88db6a..5290c347ce89 100644
--- a/pkgs/development/python-modules/cryptolyzer/default.nix
+++ b/pkgs/development/python-modules/cryptolyzer/default.nix
@@ -14,6 +14,7 @@
   pythonOlder,
   requests,
   setuptools,
+  setuptools-scm,
   urllib3,
 }:
 
@@ -22,22 +23,21 @@ buildPythonPackage rec {
   version = "1.0.0";
   pyproject = true;
 
-  disabled = pythonOlder "3.7";
+  disabled = pythonOlder "3.9";
 
   src = fetchPypi {
     inherit pname version;
     hash = "sha256-rRiRaXONLMNirKsK+QZWMSvaGeSLrHN9BpM8dhxoaxY=";
   };
 
-  postPatch = ''
-    substituteInPlace requirements.txt  \
-      --replace-warn "attrs>=20.3.0,<22.0.1" "attrs>=20.3.0" \
-      --replace-warn "bs4" "beautifulsoup4"
-  '';
+  pythonRemoveDeps = [ "bs4" ];
 
-  nativeBuildInputs = [ setuptools ];
+  build-system = [
+    setuptools
+    setuptools-scm
+  ];
 
-  propagatedBuildInputs = [
+  dependencies = [
     attrs
     beautifulsoup4
     certvalidator
diff --git a/pkgs/development/python-modules/cryptoparser/default.nix b/pkgs/development/python-modules/cryptoparser/default.nix
index 5e076f9dd8ae..11425b4022ed 100644
--- a/pkgs/development/python-modules/cryptoparser/default.nix
+++ b/pkgs/development/python-modules/cryptoparser/default.nix
@@ -8,6 +8,7 @@
   python-dateutil,
   pythonOlder,
   setuptools,
+  setuptools-scm,
   urllib3,
 }:
 
@@ -16,19 +17,17 @@ buildPythonPackage rec {
   version = "1.0.0";
   pyproject = true;
 
-  disabled = pythonOlder "3.7";
+  disabled = pythonOlder "3.9";
 
   src = fetchPypi {
     inherit pname version;
     hash = "sha256-bEvhMVcm9sXlfhxUD2K4N10nusgxpGYFJQLtJE1/qok=";
   };
 
-  postPatch = ''
-    substituteInPlace requirements.txt  \
-      --replace-fail "attrs>=20.3.0,<22.0.1" "attrs>=20.3.0"
-  '';
-
-  build-system = [ setuptools ];
+  build-system = [
+    setuptools
+    setuptools-scm
+  ];
 
   dependencies = [
     asn1crypto