diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index bd5cb928..59c27058 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -10,7 +10,7 @@ jobs:
     with:
       envs: |
         - linux: py39
-        - macos: py38
+        - macos: py311
         - linux: py310-devdeps
         - windows: py38-oldestdeps
       coverage: 'codecov'
diff --git a/changelog/218.bugfix.rst b/changelog/218.bugfix.rst
new file mode 100644
index 00000000..d1f69b2d
--- /dev/null
+++ b/changelog/218.bugfix.rst
@@ -0,0 +1 @@
+Add support for Python 3.11
diff --git a/dkist/dataset/dataset.py b/dkist/dataset/dataset.py
index b094d77c..529aa278 100644
--- a/dkist/dataset/dataset.py
+++ b/dkist/dataset/dataset.py
@@ -1,6 +1,11 @@
+import sys
 from pathlib import Path
 from textwrap import dedent
-from importlib import resources
+
+if sys.version_info < (3, 9):
+    import importlib_resources
+else:
+    import importlib.resources as importlib_resources
 
 from jsonschema.exceptions import ValidationError
 
@@ -188,7 +193,7 @@ def from_asdf(cls, filepath):
         filepath = Path(filepath).expanduser()
         base_path = filepath.parent
         try:
-            with resources.path("dkist.io", "level_1_dataset_schema.yaml") as schema_path:
+            with importlib_resources.as_file(importlib_resources.files("dkist.io") / "level_1_dataset_schema.yaml") as schema_path:
                 with asdf.open(filepath, custom_schema=schema_path.as_posix(),
                                lazy_load=False, copy_arrays=True) as ff:
                     ds = ff.tree['dataset']
diff --git a/dkist/io/asdf/tests/test_dataset.py b/dkist/io/asdf/tests/test_dataset.py
index 18a2e2dc..90658d46 100644
--- a/dkist/io/asdf/tests/test_dataset.py
+++ b/dkist/io/asdf/tests/test_dataset.py
@@ -1,5 +1,10 @@
+import sys
 from pathlib import Path
-from importlib import resources
+
+if sys.version_info < (3, 9):
+    import importlib_resources
+else:
+    import importlib.resources as importlib_resources
 
 import numpy as np
 import pytest
@@ -101,7 +106,7 @@ def test_asdf_tags(dataset, tmp_path):
                          indirect=True)
 def test_save_dataset_with_file_schema(tagobj, tmpdir):
     tree = {'dataset': tagobj}
-    with resources.path("dkist.io", "level_1_dataset_schema.yaml") as schema_path:
+    with importlib_resources.as_file(importlib_resources.files("dkist.io") / "level_1_dataset_schema.yaml") as schema_path:
         with asdf.AsdfFile(tree, custom_schema=schema_path.as_posix()) as afile:
             afile.write_to(Path(tmpdir / "test.asdf"))
 
@@ -115,7 +120,7 @@ def test_read_all_schema_versions(asdf_file):
     This test validates that we can successfully read a full and valid Dataset
     object from files with all versions of the dataset schema.
     """
-    with resources.path("dkist.io", "level_1_dataset_schema.yaml") as schema_path:
+    with importlib_resources.as_file(importlib_resources.files("dkist.io") / "level_1_dataset_schema.yaml") as schema_path:
         with asdf.open(asdf_file) as afile:
             dataset = afile["dataset"]
             dataset.files.basepath = rootdir / "EIT"
diff --git a/dkist/net/client.py b/dkist/net/client.py
index 8ad58996..ab7a4115 100644
--- a/dkist/net/client.py
+++ b/dkist/net/client.py
@@ -1,5 +1,4 @@
 import os
-import cgi
 import json
 import urllib.parse
 import urllib.request
@@ -19,6 +18,7 @@
 from sunpy.net import attrs as sattrs
 from sunpy.net.base_client import (BaseClient, QueryResponseRow,
                                    QueryResponseTable, convert_row_to_table)
+from sunpy.util.net import parse_header
 
 from dkist.utils.inventory import INVENTORY_KEY_MAP
 
@@ -170,7 +170,7 @@ def _make_filename(path: os.PathLike, row: QueryResponseRow,
         if resp:
             cdheader = resp.headers.get("Content-Disposition", None)
             if cdheader:
-                _, params = cgi.parse_header(cdheader)
+                _, params = parse_header(cdheader)
                 name = params.get('filename', "")
 
         return str(path).format(file=name, **row.response_block_map)
diff --git a/setup.cfg b/setup.cfg
index e2a85049..ded6c5b0 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -31,9 +31,10 @@ install_requires =
   gwcs>=0.18.0
   matplotlib>=3.1
   ndcube[plotting,reproject]>=2.0
-  numpy>=1.17
+  numpy>=1.21
   parfive[ftp]>=1.3
   sunpy[net,asdf]>=4
+  importlib-resources; python_version<"3.9"
 setup_requires = setuptools_scm
 
 [options.extras_require]
@@ -115,6 +116,8 @@ filterwarnings =
     ignore:ASDF functionality for astropy is being moved out of the astropy package to the new asdf-astropy package
     ignore:FLIP_TOP_BOTTOM is deprecated and will be removed in Pillow.*
     ignore::ResourceWarning
+    # Zeep relies on deprecated cgi in Python 3.11
+    ignore:'cgi' is deprecated and slated for removal in Python 3.13:DeprecationWarning:zeep.utils
     # Oldestdeps below here
     ignore:`np.float` is a deprecated alias for the builtin `float`. To silence this warning, use `float` by itself.::dask.array
     ignore:leap-second auto-update failed due to the following exception
diff --git a/tox.ini b/tox.ini
index 1f090fed..b063ed3f 100644
--- a/tox.ini
+++ b/tox.ini
@@ -45,9 +45,9 @@ deps =
     oldestdeps: gwcs<0.19
     oldestdeps: matplotlib<3.3
     oldestdeps: ndcube<2.1
-    oldestdeps: numpy<1.19
+    oldestdeps: numpy<1.22
     oldestdeps: parfive[ftp]<1.3
-    oldestdeps: sunpy[net,asdf]<4.0.1
+    oldestdeps: sunpy[net,asdf]<4.0.8  # py3.11 support added in .7
     oldestdeps: setuptools<60  # Use older setuptools to prevent distutils warning
 
 [testenv:build_docs]