diff --git a/src/auditwheel/main.py b/src/auditwheel/main.py
index d6de90d7..595ac197 100644
--- a/src/auditwheel/main.py
+++ b/src/auditwheel/main.py
@@ -13,7 +13,7 @@
 
 import auditwheel
 
-from . import main_addtag, main_lddtree, main_repair, main_show
+from . import main_lddtree, main_repair, main_show
 
 
 def main() -> int | None:
@@ -40,7 +40,6 @@ def main() -> int | None:
     sub_parsers = p.add_subparsers(metavar="command", dest="cmd")
 
     main_show.configure_parser(sub_parsers)
-    main_addtag.configure_parser(sub_parsers)
     main_repair.configure_parser(sub_parsers)
     main_lddtree.configure_subparser(sub_parsers)
 
diff --git a/src/auditwheel/main_addtag.py b/src/auditwheel/main_addtag.py
deleted file mode 100644
index 53a9fc04..00000000
--- a/src/auditwheel/main_addtag.py
+++ /dev/null
@@ -1,69 +0,0 @@
-from __future__ import annotations
-
-import logging
-from os.path import abspath, basename, exists, join
-
-logger = logging.getLogger(__name__)
-
-
-def configure_parser(sub_parsers):
-    help = "Add new platform ABI tags to a wheel"
-
-    p = sub_parsers.add_parser("addtag", help=help, description=help)
-    p.add_argument("WHEEL_FILE", help="Path to wheel file")
-    p.add_argument(
-        "-w",
-        "--wheel-dir",
-        dest="WHEEL_DIR",
-        help=("Directory to store new wheel file (default:" ' "wheelhouse/")'),
-        type=abspath,
-        default="wheelhouse/",
-    )
-    p.set_defaults(func=execute)
-
-
-def execute(args, p):
-    import os
-
-    from packaging.utils import parse_wheel_filename
-
-    from .wheel_abi import NonPlatformWheel, analyze_wheel_abi
-    from .wheeltools import InWheelCtx, WheelToolsError, add_platforms
-
-    try:
-        wheel_abi = analyze_wheel_abi(args.WHEEL_FILE)
-    except NonPlatformWheel:
-        logger.info(NonPlatformWheel.LOG_MESSAGE)
-        return 1
-
-    _, _, _, in_tags = parse_wheel_filename(basename(args.WHEEL_FILE))
-    in_fname_tags = {tag.platform for tag in in_tags}
-
-    logger.info(
-        '%s receives the following tag: "%s".',
-        basename(args.WHEEL_FILE),
-        wheel_abi.overall_tag,
-    )
-    logger.info("Use ``auditwheel show`` for more details")
-
-    if wheel_abi.overall_tag in in_fname_tags:
-        logger.info("No tags to be added. Exiting.")
-        return 1
-
-    # todo: move more of this logic to separate file
-    if not exists(args.WHEEL_DIR):
-        os.makedirs(args.WHEEL_DIR)
-
-    with InWheelCtx(args.WHEEL_FILE) as ctx:
-        try:
-            out_wheel = add_platforms(ctx, [wheel_abi.overall_tag])
-        except WheelToolsError as e:
-            logger.exception("\n%s.", repr(e))
-            return 1
-
-        if out_wheel:
-            # tell context manager to write wheel on exit with
-            # the proper output directory
-            ctx.out_wheel = join(args.WHEEL_DIR, basename(out_wheel))
-            logger.info("\nUpdated wheel written to %s", out_wheel)
-    return 0
diff --git a/tests/integration/test_addtag.py b/tests/integration/test_addtag.py
deleted file mode 100644
index 06ff82a9..00000000
--- a/tests/integration/test_addtag.py
+++ /dev/null
@@ -1,17 +0,0 @@
-from __future__ import annotations
-
-from pathlib import Path
-from unittest.mock import Mock
-
-from auditwheel.main_addtag import execute
-
-HERE = Path(__file__).parent.resolve()
-
-
-def test_smoke(tmpdir):
-    """Simple test to exercise the 'addtag' code path"""
-    args = Mock(
-        WHEEL_FILE=str(HERE / "cffi-1.5.0-cp27-none-linux_x86_64.whl"),
-        WHEEL_DIR=str(tmpdir / "wheelhouse/"),
-    )
-    execute(args, None)
diff --git a/tests/integration/test_nonplatform_wheel.py b/tests/integration/test_nonplatform_wheel.py
index 817d084e..ff1ac144 100644
--- a/tests/integration/test_nonplatform_wheel.py
+++ b/tests/integration/test_nonplatform_wheel.py
@@ -8,7 +8,7 @@
 HERE = pathlib.Path(__file__).parent.resolve()
 
 
-@pytest.mark.parametrize("mode", ["repair", "addtag", "show"])
+@pytest.mark.parametrize("mode", ["repair", "show"])
 def test_non_platform_wheel_repair(mode):
     wheel = HERE / "plumbum-1.6.8-py2.py3-none-any.whl"
     proc = subprocess.run(