diff --git a/pkgs/development/python-modules/pyhanko-certvalidator/default.nix b/pkgs/development/python-modules/pyhanko-certvalidator/default.nix
new file mode 100644
index 000000000000..4675e48a5646
--- /dev/null
+++ b/pkgs/development/python-modules/pyhanko-certvalidator/default.nix
@@ -0,0 +1,73 @@
+{ lib
+, buildPythonPackage
+, fetchFromGitHub
+, pythonOlder
+, aiohttp
+, asn1crypto
+, cryptography
+, oscrypto
+, requests
+, uritools
+, openssl
+, pytestCheckHook
+}:
+
+buildPythonPackage rec {
+  pname = "pyhanko-certvalidator";
+  version = "0.19.5";
+  format = "setuptools";
+
+  disabled = pythonOlder "3.7";
+
+  # Tests are only available on GitHub
+  src = fetchFromGitHub {
+    owner = "MatthiasValvekens";
+    repo = "certvalidator";
+    rev = version;
+    sha256 = "sha256-UxlBggKgqvbKioG98UaKvhW0YgEa6PqV913nqYvTx1I=";
+  };
+
+  propagatedBuildInputs = [
+    asn1crypto
+    cryptography
+    oscrypto
+    requests
+    uritools
+  ];
+
+  checkInputs = [
+    aiohttp
+    pytestCheckHook
+  ];
+
+  disabledTestPaths = [
+    # Test looks for libcrypto.so.1.1
+    "dev/stress_test.py"
+    # Requests
+    "tests/test_crl_client.py"
+  ];
+
+  disabledTests = [
+    # Look for nonexisting certificates
+    "test_basic_certificate_validator_tls"
+    # Failed to fetch OCSP response from http://ocsp.digicert.com
+    "test_fetch_ocsp_aiohttp"
+    "test_fetch_ocsp_requests"
+    "test_fetch_ocsp_err_requests"
+    # Unable to build a validation path for the certificate "%s" - no issuer matching "%s" was found
+    "test_revocation_mode_hard_aiohttp_autofetch"
+    # The path could not be validated because no revocation information could be found for intermediate certificate 1
+    "test_revocation_mode_hard"
+  ];
+
+  pythonImportsCheck = [
+    "pyhanko_certvalidator"
+  ];
+
+  meta = with lib; {
+    description = "Python library for validating X.509 certificates and paths";
+    homepage = "https://github.com/MatthiasValvekens/certvalidator";
+    license = licenses.mit;
+    maintainers = with maintainers; [ wolfangaukang ];
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index 49b0d981d7d9..a6524cd8e64c 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -7159,6 +7159,8 @@ in {
 
   pyhamcrest = callPackage ../development/python-modules/pyhamcrest { };
 
+  pyhanko-certvalidator = callPackage ../development/python-modules/pyhanko-certvalidator { };
+
   pyhaversion = callPackage ../development/python-modules/pyhaversion { };
 
   pyhcl = callPackage ../development/python-modules/pyhcl { };