diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 7825e2b7..57f351b6 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -25,10 +25,11 @@ jobs:
     strategy:
       matrix:
         config:
-          - {platform: ubuntu-latest, python-version: 3.7}
-          - {platform: ubuntu-latest, python-version: 3.8}
-          - {platform: ubuntu-latest, python-version: 3.9}
-          - {platform: windows-latest, python-version: 3.9}
+          - {platform: ubuntu-latest, python-version: "3.8"}
+          - {platform: ubuntu-latest, python-version: "3.9"}
+          - {platform: ubuntu-latest, python-version: "3.10"}
+          - {platform: ubuntu-latest, python-version: "3.11"}
+          - {platform: windows-latest, python-version: "3.11"}
     steps:
     - uses: actions/checkout@v2
 
diff --git a/README.md b/README.md
index 5770c40e..ae52710a 100644
--- a/README.md
+++ b/README.md
@@ -14,7 +14,7 @@ nanoemoji --helpfull
 nanoemoji --color_format glyf_colr_1 $(find ../noto-emoji/svg -name 'emoji_u270d*.svg')
 ```
 
-Requires Python 3.7 or greater.
+Requires Python 3.8 or greater.
 
 ## Color table support
 
diff --git a/setup.py b/setup.py
index 9f110c00..fe9dc81c 100644
--- a/setup.py
+++ b/setup.py
@@ -45,7 +45,7 @@
         "picosvg>=0.22.1",
         "pillow>=7.2.0",
         "regex>=2020.4.4",
-        "tomlkit",
+        "toml>=0.10.1",
         "ufo2ft[cffsubr]>=2.24.0",
         "ufoLib2>=0.6.2",
         "resvg-cli>=0.22.0.post3",
@@ -53,8 +53,7 @@
         "pngquant-cli>=2.17.0.post5",
     ],
     extras_require=extras_require,
-    # this is so we can use the built-in dataclasses module
-    python_requires=">=3.7",
+    python_requires=">=3.8",
 
     # this is for type checker to use our inline type hints:
     # https://www.python.org/dev/peps/pep-0561/#id18
diff --git a/src/nanoemoji/config.py b/src/nanoemoji/config.py
index a44d22a4..0d18c0d5 100644
--- a/src/nanoemoji/config.py
+++ b/src/nanoemoji/config.py
@@ -20,9 +20,9 @@
     import importlib_resources as resources  # pytype: disable=import-error
 
 import itertools
-import tomlkit
 from pathlib import Path
 from picosvg.svg_transform import Affine2D
+import toml
 from typing import Any, Iterable, MutableMapping, NamedTuple, Optional, Tuple, Sequence
 
 from nanoemoji import util
@@ -247,20 +247,6 @@ def default(self) -> MasterConfig:
         raise ValueError("Must have a default master")
 
 
-def toml_strip(data):
-    """
-    Workaround for:
-    https://github.com/sdispater/tomlkit/issues/240
-    """
-    new_data = {}
-    for key, val in data.items():
-        if isinstance(val, dict):
-            val = toml_strip(val)
-        if val is not None:
-            new_data[key] = val
-    return new_data
-
-
 def write(dest: Path, config: FontConfig):
     toml_cfg = {
         "family": config.family,
@@ -302,8 +288,7 @@ def write(dest: Path, config: FontConfig):
             for m in config.masters
         },
     }
-    with open(dest, "w") as toml_file:
-        tomlkit.dump(toml_strip(toml_cfg), toml_file)
+    dest.write_text(toml.dumps(toml_cfg))
 
 
 def _resolve_config(
@@ -311,11 +296,9 @@ def _resolve_config(
 ) -> Tuple[Optional[Path], MutableMapping[str, Any]]:
     if config_file is None:
         with resources.path("nanoemoji.data", _DEFAULT_CONFIG_FILE) as config_file:
-            with open(config_file) as file:
-                # no config_dir in this context; bad input if we need it
-                return None, tomlkit.load(file)
-    with open(config_file) as file:
-        return config_file.parent, tomlkit.load(file)
+            # no config_dir in this context; bad input if we need it
+            return None, toml.load(config_file)
+    return config_file.parent, toml.load(config_file)
 
 
 def _resolve_src(relative_base: Optional[Path], src: str) -> Iterable[Path]:
diff --git a/tox.ini b/tox.ini
index 185241c7..d3efbe26 100644
--- a/tox.ini
+++ b/tox.ini
@@ -11,7 +11,7 @@
 ;   $ export TOXENV=py39
 ;   $ tox
 ;     # If present use $TOXENV environment variable
-envlist = lint, py3{7,8,9}
+envlist = lint, py3{8,9,10,11}
 
 ; if any of the requested python interpreters is unavailable (e.g. on the local dev
 ; workstation), the tests are skipped and tox won't return an error