diff --git a/src/gam/__init__.py b/src/gam/__init__.py
index e8b9317e..229ece50 100755
--- a/src/gam/__init__.py
+++ b/src/gam/__init__.py
@@ -12418,9 +12418,16 @@ def _generatePrivateKeyAndPublicCert(projectId, clientEmail, name, key_size, b64
     writeStdout(Msg.EXTRACTING_PUBLIC_CERTIFICATE+'\n')
   public_key = private_key.public_key()
   builder = x509.CertificateBuilder()
-  builder = builder.subject_name(x509.Name([x509.NameAttribute(NameOID.COMMON_NAME, name, _validate=False)]))
-  builder = builder.issuer_name(x509.Name([x509.NameAttribute(NameOID.COMMON_NAME, name, _validate=False)]))
-  # Gooogle seems to enforce the not before date strictly. Set the not before
+  # suppress cryptography warnings on service account email length
+  with warnings.catch_warnings():
+    warnings.filterwarnings('ignore', message='.*Attribute\'s length.*')
+    builder = builder.subject_name(x509.Name([x509.NameAttribute(NameOID.COMMON_NAME,
+                                                                 name,
+                                                                 _validate=False)]))
+    builder = builder.issuer_name(x509.Name([x509.NameAttribute(NameOID.COMMON_NAME,
+                                                                name,
+                                                                _validate=False)]))
+  # Google seems to enforce the not before date strictly. Set the not before
   # date to be UTC two minutes ago which should cover any clock skew.
   now = datetime.datetime.utcnow()
   builder = builder.not_valid_before(now - datetime.timedelta(minutes=2))