diff --git a/src/tox_wheel/plugin.py b/src/tox_wheel/plugin.py
index 0371185..a9163b7 100644
--- a/src/tox_wheel/plugin.py
+++ b/src/tox_wheel/plugin.py
@@ -19,6 +19,11 @@ def tox_addoption(parser):
         action="store_true",
         help="Build wheel instead of sdist",
     )
+    parser.add_argument(
+        "--wheel-pep517",
+        action="store_true",
+        help="Build wheel using PEP 517/518"
+    )
     parser.add_argument(
         "--wheel-dirty",
         action="store_true",
@@ -79,7 +84,7 @@ def tox_package(session, venv):
 
 
 def wheel_build_package(config, session, venv):
-    if config.isolated_build or venv.envconfig.wheel_pep517:
+    if config.isolated_build or session.config.option.wheel_pep517 or venv.envconfig.wheel_pep517:
         wheel_package = wheel_build_pep517(config, session, venv)
     else:
         wheel_package = wheel_build_legacy(config, session, venv)