diff --git a/src/stratis_cli/_parser/_parser.py b/src/stratis_cli/_parser/_parser.py
index 7be7294ff..68f7c2269 100644
--- a/src/stratis_cli/_parser/_parser.py
+++ b/src/stratis_cli/_parser/_parser.py
@@ -33,6 +33,7 @@
 from ._logical import LOGICAL_SUBCMDS
 from ._physical import PHYSICAL_SUBCMDS
 from ._pool import POOL_SUBCMDS
+from ._range import PrintHelpAction
 
 
 def print_help(parser):
@@ -213,6 +214,11 @@ def gen_parser():
     # version is special, it has explicit support in argparse
     parser.add_argument("--version", action="version", version=__version__)
 
+    # --print-all-help is special because it introspects on the parser
+    parser.add_argument(
+        "--print-all-help", action=PrintHelpAction, help=argparse.SUPPRESS, nargs=0
+    )
+
     _add_args(parser, GEN_ARGS)
 
     subparsers = parser.add_subparsers(title="subcommands")
diff --git a/src/stratis_cli/_parser/_range.py b/src/stratis_cli/_parser/_range.py
index c41a5100c..b03c9c2cd 100644
--- a/src/stratis_cli/_parser/_range.py
+++ b/src/stratis_cli/_parser/_range.py
@@ -18,6 +18,7 @@
 # isort: STDLIB
 import argparse
 import re
+import sys
 
 # isort: THIRDPARTY
 from justbytes import B, GiB, KiB, MiB, PiB, Range, TiB
@@ -98,3 +99,35 @@ class DefaultAction(argparse.Action):
     def __call__(self, parser, namespace, values, option_string=None):
         setattr(namespace, self.dest, values)
         setattr(namespace, self.dest + "_default", False)
+
+
+def gen_subparsers(parser, command_line):
+    """
+    Yield all subparser/command_lines pairs for this parser and this prefix
+    command line.
+
+    :param parser: an argparse parser
+    :param command_line: a prefix command line
+    :type command_line: list of str
+    """
+    yield (parser, command_line)
+    for action in (
+        action
+        for action in parser._actions  # pylint: disable=protected-access
+        if isinstance(
+            action, argparse._SubParsersAction  # pylint: disable=protected-access
+        )
+    ):
+        for name, subparser in sorted(action.choices.items(), key=lambda x: x[0]):
+            yield from gen_subparsers(subparser, command_line + [name])
+
+
+class PrintHelpAction(argparse.Action):
+    """
+    Print the help text for every subcommand.
+    """
+
+    def __call__(self, parser, namespace, values, option_string=None):
+        for subparser, _ in gen_subparsers(parser, []):
+            subparser.print_help()
+        sys.exit(0)
diff --git a/tests/whitebox/integration/test_help_text.py b/tests/whitebox/integration/test_help_text.py
deleted file mode 100644
index fd58994ce..000000000
--- a/tests/whitebox/integration/test_help_text.py
+++ /dev/null
@@ -1,53 +0,0 @@
-# Copyright 2025 Red Hat, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-"""
-Test that printing out help text does not result in any error returns or
-exceptions.
-"""
-
-# isort: STDLIB
-from argparse import _SubParsersAction
-
-# isort: LOCAL
-from stratis_cli._parser import gen_parser
-
-from ._misc import RunTestCase
-
-
-def gen_subcommands(parser, command_line):
-    """
-    Recursively traverse the parser, yielding all possible subcommands.
-    """
-    yield command_line
-    for action in (
-        action
-        for action in parser._actions  # pylint: disable=protected-access
-        if isinstance(action, _SubParsersAction)
-    ):
-        for name, subparser in action.choices.items():
-            yield from gen_subcommands(subparser, command_line + [name])
-
-
-class ParserHelpTestCase(RunTestCase):
-    """
-    Test various timeout inputs.
-    """
-
-    def test_help(self):
-        """
-        Test all parser help.
-        """
-
-        for command_line in gen_subcommands(gen_parser(), []):
-            self.check_system_exit(command_line + ["--help"], 0)
diff --git a/tests/whitebox/integration/test_parser.py b/tests/whitebox/integration/test_parser.py
index 7076a5a49..2dc1f8a40 100644
--- a/tests/whitebox/integration/test_parser.py
+++ b/tests/whitebox/integration/test_parser.py
@@ -15,6 +15,10 @@
 Test command-line argument parsing.
 """
 
+# isort: STDLIB
+from io import StringIO
+from unittest import mock
+
 # isort: LOCAL
 from stratis_cli import StratisCliErrorCodes
 
@@ -432,3 +436,16 @@ def test_stratis_list_default(self):
         for subcommand in [["pool"], ["filesystem"], ["blockdev"]]:
             for prefix in [[], ["--propagate"]]:
                 self.assertEqual(RUNNER(prefix + subcommand), 0)
+
+
+class TestAllHelp(RunTestCase):
+    """
+    Verify that --print-all-help option succeeds.
+    """
+
+    def test_print_all_help(self):
+        """
+        Test the --print-all-help option.
+        """
+        with mock.patch("sys.stdout", new=StringIO()):
+            self.check_system_exit(["--print-all-help"], 0)