diff --git a/src/test/test.py b/src/test/test.py
index 08b7832..d3d9056 100644
--- a/src/test/test.py
+++ b/src/test/test.py
@@ -254,8 +254,8 @@ def test_our_config_token_with_our_key():
                       .issuer_name(ca_subject)
                       .public_key(instance_private_key.public_key())
                       .serial_number(x509.random_serial_number())
-                      .not_valid_before(datetime.utcnow() - timedelta(days=1))
-                      .not_valid_after(datetime.utcnow() + timedelta(days=365 * 10))
+                      .not_valid_before(datetime.now(tz=UTC) - timedelta(days=1))
+                      .not_valid_after(datetime.now(tz=UTC) + timedelta(days=365 * 10))
                       .add_extension(x509.BasicConstraints(ca=True, path_length=None), critical=True)
                       .sign(instance_private_key, hashes.SHA256()))
 
@@ -276,8 +276,8 @@ def test_our_config_token_with_our_key():
                    .issuer_name(issuer_name)
                    .public_key(instance_private_key.public_key())
                    .serial_number(x509.random_serial_number())
-                   .not_valid_before(datetime.utcnow() - timedelta(days=1))
-                   .not_valid_after(datetime.utcnow() + timedelta(days=3650))
+                   .not_valid_before(datetime.now(tz=UTC) - timedelta(days=1))
+                   .not_valid_after(datetime.now(tz=UTC) + timedelta(days=3650))
                    .add_extension(x509.BasicConstraints(ca=False, path_length=None), critical=False)
                    .sign(instance_private_key, hashes.SHA256())
                    )