diff --git a/python-cryptography.spec b/python-cryptography.spec
index 9877601..07d9285 100644
--- a/python-cryptography.spec
+++ b/python-cryptography.spec
@@ -116,6 +116,7 @@ export OPENSSL_ENABLE_SHA1_SIGNATURES=yes
 # see rhbz#2171661 for test_load_invalid_ec_key_from_pem: error:030000CD:digital envelope routines::keymgmt export failure
 PYTHONPATH=${PWD}/vectors:%{buildroot}%{python3_sitearch} \
     %{__python3} -m pytest \
+    --ignore vendor \
     -k "not (test_buffer_protocol_alternate_modes or test_dh_parameters_supported or test_load_ecdsa_no_named_curve or test_decrypt_invalid_decrypt or test_openssl_memleak or test_load_invalid_ec_key_from_pem)"
 %endif
 
@@ -128,6 +129,7 @@ PYTHONPATH=${PWD}/vectors:%{buildroot}%{python3_sitearch} \
 %changelog
 * Thu Mar 09 2023 Miro Hrončok <mhroncok@redhat.com> - 39.0.2-2
 - Don't run tests requiring pytz on RHEL
+- Don't try to run tests of vendored dependencies in %%check
 
 * Sat Mar 04 2023 Christian Heimes <cheimes@redhat.com> - 39.0.2-1
 - Update to 39.0.2, resolves rhbz#2124729