diff --git a/pkgs/development/python-modules/cryptography/default.nix b/pkgs/development/python-modules/cryptography/default.nix
index d5e4af33f601..7f746655c766 100644
--- a/pkgs/development/python-modules/cryptography/default.nix
+++ b/pkgs/development/python-modules/cryptography/default.nix
@@ -18,6 +18,7 @@
 , pretend
 , libiconv
 , iso8601
+, py
 , pytz
 , hypothesis
 }:
@@ -28,6 +29,7 @@ in
 buildPythonPackage rec {
   pname = "cryptography";
   version = "38.0.4"; # Also update the hash in vectors.nix
+  format = "setuptools";
   disabled = pythonOlder "3.6";
 
   src = fetchPypi {
@@ -63,6 +65,7 @@ buildPythonPackage rec {
     hypothesis
     iso8601
     pretend
+    py
     pytestCheckHook
     pytest-benchmark
     pytest-subtests
diff --git a/pkgs/development/python-modules/cryptography/vectors.nix b/pkgs/development/python-modules/cryptography/vectors.nix
index 4de95b000263..31ace7c48ffd 100644
--- a/pkgs/development/python-modules/cryptography/vectors.nix
+++ b/pkgs/development/python-modules/cryptography/vectors.nix
@@ -4,6 +4,7 @@ buildPythonPackage rec {
   pname = "cryptography-vectors";
   # The test vectors must have the same version as the cryptography package
   inherit (cryptography) version;
+  format = "setuptools";
 
   src = fetchPypi {
     pname = "cryptography_vectors";