diff --git a/pkgs/development/python-modules/pycfmodel/default.nix b/pkgs/development/python-modules/pycfmodel/default.nix
index f361b3803bca..a2798e8199e6 100644
--- a/pkgs/development/python-modules/pycfmodel/default.nix
+++ b/pkgs/development/python-modules/pycfmodel/default.nix
@@ -6,26 +6,31 @@
   pydantic,
   pytestCheckHook,
   pythonOlder,
+  pythonRelaxDepsHook,
   setuptools,
 }:
 
 buildPythonPackage rec {
   pname = "pycfmodel";
-  version = "0.22.0";
+  version = "1.0.0";
   pyproject = true;
 
-  disabled = pythonOlder "3.7";
+  disabled = pythonOlder "3.8";
 
   src = fetchFromGitHub {
     owner = "Skyscanner";
     repo = "pycfmodel";
-    rev = "refs/tags/v${version}";
-    hash = "sha256-NLi94W99LhrBXNFItMfJczV9EZlgvmvkavrfDQJs0YU=";
+    rev = "refs/tags/${version}";
+    hash = "sha256-iCjOSwW6rdG3H4e/B/um+QioP45nOr9OcPAwXxZs3mU=";
   };
 
-  nativeBuildInputs = [ setuptools ];
+  pythonRelaxDeps = [ "pydantic" ];
 
-  propagatedBuildInputs = [ pydantic ];
+  build-system = [ setuptools ];
+
+  nativeBuildInputs = [ pythonRelaxDepsHook ];
+
+  dependencies = [ pydantic ];
 
   nativeCheckInputs = [
     httpx
@@ -39,6 +44,10 @@ buildPythonPackage rec {
     "test_valid_es_domain_from_aws_documentation_examples_resource_can_be_built"
     "test_valid_opensearch_domain_from_aws_documentation_examples_resource_can_be_built"
     "test_resolve_booleans_different_properties_for_generic_resource"
+    "test_loose_ip"
+    "test_extra_fields_not_allowed_s3_bucket"
+    "test_raise_error_if_invalid_fields_in_resource"
+    ""
   ];
 
   pythonImportsCheck = [ "pycfmodel" ];
@@ -49,6 +58,5 @@ buildPythonPackage rec {
     changelog = "https://github.com/Skyscanner/pycfmodel/releases/tag/v${version}";
     license = licenses.asl20;
     maintainers = with maintainers; [ fab ];
-    broken = versionAtLeast pydantic.version "2";
   };
 }
diff --git a/pkgs/tools/security/cfripper/default.nix b/pkgs/tools/security/cfripper/default.nix
index edacd10e8b05..a1c9f9484981 100644
--- a/pkgs/tools/security/cfripper/default.nix
+++ b/pkgs/tools/security/cfripper/default.nix
@@ -3,36 +3,32 @@
 , python3
 }:
 
-
-let
-  python = python3.override {
-    packageOverrides = self: super: {
-      pydantic = self.pydantic_1;
-    };
-  };
-in python.pkgs.buildPythonApplication rec {
+python3.pkgs.buildPythonApplication rec {
   pname = "cfripper";
-  version = "1.15.6";
+  version = "1.15.7";
   pyproject = true;
 
   src = fetchFromGitHub {
     owner = "Skyscanner";
     repo = "cfripper";
     rev = "refs/tags/v${version}";
-    hash = "sha256-h/NNTE5u1coyD4owiGjsK6SIuvDq1SQOPW4RM4yJtno=";
+    hash = "sha256-ymuxZwW3Pwx/CyG2iPoY7LP9e+1K6EUBi/TApg0YvkE=";
   };
 
   pythonRelaxDeps = [
     "pluggy"
   ];
 
-  nativeBuildInputs = with python.pkgs; [
-    pythonRelaxDepsHook
+  build-system = with python3.pkgs; [
     setuptools
     setuptools-scm
   ];
 
-  propagatedBuildInputs = with python.pkgs; [
+  nativeBuildInputs = with python3.pkgs; [
+    pythonRelaxDepsHook
+  ];
+
+  dependencies = with python3.pkgs; [
     boto3
     cfn-flip
     click
@@ -43,7 +39,7 @@ in python.pkgs.buildPythonApplication rec {
     setuptools
   ];
 
-  nativeCheckInputs = with python.pkgs; [
+  nativeCheckInputs = with python3.pkgs; [
     moto
     pytestCheckHook
   ];
@@ -65,10 +61,10 @@ in python.pkgs.buildPythonApplication rec {
 
   meta = with lib; {
     description = "Tool for analysing CloudFormation templates";
-    mainProgram = "cfripper";
     homepage = "https://github.com/Skyscanner/cfripper";
     changelog = "https://github.com/Skyscanner/cfripper/releases/tag/v${version}";
     license = with licenses; [ asl20 ];
     maintainers = with maintainers; [ fab ];
+    mainProgram = "cfripper";
   };
 }