diff --git a/jose/backends/cryptography_backend.py b/jose/backends/cryptography_backend.py
index 2533f2e2..d4256bd2 100644
--- a/jose/backends/cryptography_backend.py
+++ b/jose/backends/cryptography_backend.py
@@ -20,9 +20,14 @@
 from cryptography.hazmat.primitives.keywrap import aes_key_wrap, aes_key_unwrap, InvalidUnwrap
 from cryptography.hazmat.primitives.padding import PKCS7
 from cryptography.hazmat.primitives.serialization import load_pem_private_key, load_pem_public_key
-from cryptography.utils import int_from_bytes, int_to_bytes
 from cryptography.x509 import load_pem_x509_certificate
 
+if not hasattr(int, "from_bytes"):
+    from cryptography.utils import int_from_bytes, int_to_bytes
+else:
+    from cryptography.utils import int_to_bytes
+    int_from_bytes = int.from_bytes
+
 _binding = None
 
 
diff --git a/setup.py b/setup.py
index 5d82817e..a51d4649 100644
--- a/setup.py
+++ b/setup.py
@@ -29,7 +29,7 @@ def _cryptography_version():
     if platform.python_implementation() == 'PyPy' and platform.python_version() < '5.4':
         return 'cryptography < 2.5'
 
-    return 'cryptography'
+    return 'cryptography < 3.5'
 
 
 pyasn1 = ['pyasn1']