diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 1a21714e2..118881f55 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -13,8 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         python:
-          - '3.10'
-          #- 3.11
+          - '3.11'
     steps:
     - name: Check out repository
       uses: actions/checkout@v7
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 864232f22..178fe8b1f 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -15,7 +15,7 @@ jobs:
     - name: Set up Python
       uses: actions/setup-python@v6
       with:
-        python-version: '3.10'
+        python-version: '3.11'
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 820a4a940..2299b505e 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -26,7 +26,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
-          python-version: '3.10'
+          python-version: '3.11'
 
       - name: Install build & twine
         run: python -m pip install build twine
diff --git a/.github/workflows/run-tests.yml b/.github/workflows/run-tests.yml
index a03fe759e..1d7a08699 100644
--- a/.github/workflows/run-tests.yml
+++ b/.github/workflows/run-tests.yml
@@ -34,8 +34,7 @@ jobs:
           - macos-latest  # M1 architecture
           - macos-15-intel  # non-M1 architecture
         python:
-          - '3.10'  # Needs quotes so YAML doesn't think it's 3.1
-          - '3.11'
+          - '3.11'  # Needs quotes so YAML doesn't think it's 3.1
           - '3.12'
           - '3.13'
           - '3.14'
@@ -48,10 +47,10 @@ jobs:
           - default
         include:
           - os: ubuntu-latest
-            python: '3.10'
+            python: '3.11'
             mode: dandi-api
           - os: ubuntu-latest
-            python: '3.10'
+            python: '3.11'
             mode: dandi-api
             vendored_dandiapi: ember-dandi
             instance_name: EMBER-DANDI
@@ -61,13 +60,13 @@ jobs:
             python: 3.14
             mode: obolibrary-only
           - os: ubuntu-latest
-            python: '3.10'
+            python: '3.11'
             mode: dev-deps
           - os: ubuntu-latest
             python: 3.14
             mode: dev-deps
           - os: ubuntu-latest
-            python: '3.10'
+            python: '3.11'
             mode: nfs
 
     steps:
diff --git a/.github/workflows/typing.yml b/.github/workflows/typing.yml
index 3025111d9..ff4ec5448 100644
--- a/.github/workflows/typing.yml
+++ b/.github/workflows/typing.yml
@@ -16,7 +16,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v6
         with:
-          python-version: '3.10'
+          python-version: '3.11'
 
       - name: Install dependencies
         run: |
diff --git a/.readthedocs.yaml b/.readthedocs.yaml
index cc1f3519b..e43bb4339 100644
--- a/.readthedocs.yaml
+++ b/.readthedocs.yaml
@@ -2,7 +2,7 @@ version: 2
 build:
   os: ubuntu-22.04
   tools:
-    python: "3.10"
+    python: "3.11"
 python:
     install:
         - requirements: docs/requirements.txt
diff --git a/dandi/cli/base.py b/dandi/cli/base.py
index 1b118d7ed..7aa3059c6 100644
--- a/dandi/cli/base.py
+++ b/dandi/cli/base.py
@@ -31,21 +31,17 @@ def get_metavar(self, param, ctx=None):
 
 
 class EnumChoice(click.Choice):
-    """A ``click.Choice`` over a ``str``-valued ``Enum``, matched on member values.
+    """A ``click.Choice`` over an ``Enum``, matched on member values.
 
-    The available choices presented on the command line are the enum member
-    values (e.g. ``error``, ``skip``), and ``convert`` returns the corresponding
-    enum member. A string default is converted to its member as well.
+    ``click >= 8.2`` matches ``Enum`` members on ``.name`` by default; this
+    subclass overrides :meth:`click.Choice.normalize_choice` to match on
+    ``.value`` instead, so command-line tokens stay the lowercase enum values
+    (``error``, ``skip``, ...). ``click.Choice.convert`` then returns the
+    matched enum member.
     """
 
-    def __init__(self, enum_cls: type[Enum], case_sensitive: bool = True) -> None:
-        self.enum_cls = enum_cls
-        super().__init__([e.value for e in enum_cls], case_sensitive=case_sensitive)
-
-    def convert(self, value, param, ctx):
-        if value is None or isinstance(value, self.enum_cls):
-            return value
-        return self.enum_cls(super().convert(value, param, ctx))
+    def normalize_choice(self, choice, ctx=None):
+        return choice.value if isinstance(choice, Enum) else str(choice)
 
 
 class ChoiceList(click.ParamType):
diff --git a/dandi/cli/tests/test_base.py b/dandi/cli/tests/test_base.py
index 1576f422a..9732af10f 100644
--- a/dandi/cli/tests/test_base.py
+++ b/dandi/cli/tests/test_base.py
@@ -1,4 +1,4 @@
-from enum import Enum
+from enum import StrEnum
 
 import click
 from click.testing import CliRunner
@@ -7,14 +7,11 @@
 from ..base import EnumChoice
 
 
-class _Existing(str, Enum):
+class _Existing(StrEnum):
     ERROR = "error"
     SKIP = "skip"
     OVERWRITE = "overwrite-different"
 
-    def __str__(self) -> str:
-        return self.value
-
 
 def _make_command(**option_kwargs):
     @click.command()
diff --git a/dandi/consts.py b/dandi/consts.py
index 9f51dcf04..145b39ee2 100644
--- a/dandi/consts.py
+++ b/dandi/consts.py
@@ -11,7 +11,7 @@
 
 from collections.abc import Iterator
 from dataclasses import dataclass
-from enum import Enum
+from enum import Enum, StrEnum
 import os
 
 #: A list of metadata fields which dandi extracts from .nwb files.
@@ -101,13 +101,10 @@ class EmbargoStatus(Enum):
     EMBARGOED = "EMBARGOED"
 
 
-class SyncMode(str, Enum):
+class SyncMode(StrEnum):
     ASK = "ask"
     DO = "do"
 
-    def __str__(self) -> str:
-        return self.value
-
 
 dandiset_metadata_file = "dandiset.yaml"
 dandiset_identifier_regex = f"^{DANDISET_ID_REGEX}$"
diff --git a/dandi/download.py b/dandi/download.py
index 438f2e4d8..ff4e172a6 100644
--- a/dandi/download.py
+++ b/dandi/download.py
@@ -14,7 +14,7 @@
 from collections.abc import Callable, Iterable, Iterator, Sequence
 from dataclasses import InitVar, dataclass, field
 from datetime import datetime
-from enum import Enum
+from enum import Enum, StrEnum
 from functools import partial
 import hashlib
 import inspect
@@ -69,32 +69,23 @@
 lgr = get_logger()
 
 
-class DownloadExisting(str, Enum):
+class DownloadExisting(StrEnum):
     ERROR = "error"
     SKIP = "skip"
     OVERWRITE = "overwrite"
     OVERWRITE_DIFFERENT = "overwrite-different"
     REFRESH = "refresh"
 
-    def __str__(self) -> str:
-        return self.value
 
-
-class DownloadFormat(str, Enum):
+class DownloadFormat(StrEnum):
     PYOUT = "pyout"
     DEBUG = "debug"
 
-    def __str__(self) -> str:
-        return self.value
-
 
-class PathType(str, Enum):
+class PathType(StrEnum):
     EXACT = "exact"
     GLOB = "glob"
 
-    def __str__(self) -> str:
-        return self.value
-
 
 def download(
     urls: str | Sequence[str],
diff --git a/dandi/move.py b/dandi/move.py
index 72806dcd4..887c7dc1f 100644
--- a/dandi/move.py
+++ b/dandi/move.py
@@ -15,7 +15,7 @@
 from collections.abc import Iterator
 from contextlib import ExitStack
 from dataclasses import dataclass, field
-from enum import Enum
+from enum import StrEnum
 from itertools import zip_longest
 import os.path
 from pathlib import Path, PurePosixPath
@@ -35,24 +35,18 @@
 lgr = get_logger()
 
 
-class MoveExisting(str, Enum):
+class MoveExisting(StrEnum):
     ERROR = "error"
     SKIP = "skip"
     OVERWRITE = "overwrite"
 
-    def __str__(self) -> str:
-        return self.value
-
 
-class MoveWorkOn(str, Enum):
+class MoveWorkOn(StrEnum):
     AUTO = "auto"
     BOTH = "both"
     LOCAL = "local"
     REMOTE = "remote"
 
-    def __str__(self) -> str:
-        return self.value
-
 
 #: A /-separated path to an asset, relative to the root of the Dandiset
 AssetPath = NewType("AssetPath", str)
diff --git a/dandi/organize.py b/dandi/organize.py
index 70771d6cb..daf4fb9c2 100644
--- a/dandi/organize.py
+++ b/dandi/organize.py
@@ -15,11 +15,11 @@
 from collections import Counter
 from collections.abc import Sequence
 from copy import deepcopy
-from enum import Enum
+from enum import StrEnum
 import os
 import os.path as op
-import posixpath
 from pathlib import Path, PurePosixPath
+import posixpath
 import re
 import traceback
 import uuid
@@ -54,7 +54,7 @@
 lgr = get_logger()
 
 
-class FileOperationMode(str, Enum):
+class FileOperationMode(StrEnum):
     DRY = "dry"
     SIMULATE = "simulate"
     COPY = "copy"
@@ -63,23 +63,17 @@ class FileOperationMode(str, Enum):
     SYMLINK = "symlink"
     AUTO = "auto"
 
-    def __str__(self) -> str:
-        return self.value
-
     def as_copy_mode(self) -> CopyMode:
         # Raises ValueError if the mode can't be mapped to a CopyMode
         return CopyMode(self.value)
 
 
-class CopyMode(str, Enum):
+class CopyMode(StrEnum):
     SYMLINK = "symlink"
     COPY = "copy"
     MOVE = "move"
     HARDLINK = "hardlink"
 
-    def __str__(self) -> str:
-        return self.value
-
     def copy(self, old_path: AnyPath, new_path: AnyPath) -> None:
         if self is CopyMode.SYMLINK:
             os.symlink(old_path, new_path)
@@ -93,13 +87,10 @@ def copy(self, old_path: AnyPath, new_path: AnyPath) -> None:
             raise AssertionError(f"Unhandled CopyMode member: {self!r}")
 
 
-class OrganizeInvalid(str, Enum):
+class OrganizeInvalid(StrEnum):
     FAIL = "fail"
     WARN = "warn"
 
-    def __str__(self) -> str:
-        return self.value
-
 
 dandi_path = op.join("sub-{subject_id}", "{dandi_filename}")
 
diff --git a/dandi/upload.py b/dandi/upload.py
index 94adb21b9..e9d5b2402 100644
--- a/dandi/upload.py
+++ b/dandi/upload.py
@@ -14,7 +14,7 @@
 from collections import defaultdict
 from collections.abc import Iterator, Sequence
 from contextlib import ExitStack
-from enum import Enum
+from enum import StrEnum
 import io
 import os.path
 from pathlib import Path
@@ -83,25 +83,19 @@ class Uploaded(TypedDict):
     errors: list[str]
 
 
-class UploadExisting(str, Enum):
+class UploadExisting(StrEnum):
     ERROR = "error"
     SKIP = "skip"
     FORCE = "force"
     OVERWRITE = "overwrite"
     REFRESH = "refresh"
 
-    def __str__(self) -> str:
-        return self.value
 
-
-class UploadValidation(str, Enum):
+class UploadValidation(StrEnum):
     REQUIRE = "require"
     SKIP = "skip"
     IGNORE = "ignore"
 
-    def __str__(self) -> str:
-        return self.value
-
 
 def upload(
     paths: Sequence[str | Path] | None = None,
diff --git a/pyproject.toml b/pyproject.toml
index a7623e51c..03d9f0d62 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -7,7 +7,7 @@ build-backend = 'setuptools.build_meta'
 name = "dandi"
 description = "Command line client for interaction with DANDI instances"
 readme = "README.md"
-requires-python = ">=3.10"
+requires-python = ">=3.11"
 license = {file = "LICENSE"}
 authors = [
     {name = "DANDI developers", email = "team@dandiarchive.org"},
@@ -36,7 +36,6 @@ classifiers = [
     "License :: OSI Approved :: Apache Software License",
     "Operating System :: OS Independent",
     "Programming Language :: Python",
-    "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
@@ -46,7 +45,7 @@ classifiers = [
 dependencies = [
     "bidsschematools ~= 1.0",
     "bids-validator-deno >= 2.0.5",
-    "click >= 7.1",
+    "click >= 8.2",
     "click-didyoumean",
     "dandischema ~= 0.12.0",
     "etelemetry >= 0.2.2",
@@ -237,7 +236,7 @@ init_forbid_extra = true
 
 [tool.hatch.envs.default]
 installer = "uv"
-python = "3.10"
+python = "3.11"
 
 [tool.hatch.envs.test]
 features = ["test"]
diff --git a/tox.ini b/tox.ini
index 3f735d092..b71a3efcf 100644
--- a/tox.ini
+++ b/tox.ini
@@ -21,7 +21,6 @@ skip_install = true
 deps =
     codespell~=2.4.1
     flake8
-    tomli; python_version < '3.11'
 commands =
     codespell dandi docs tools setup.py
     flake8 --config=setup.cfg {posargs} dandi setup.py