diff --git a/.github/workflows/code.yml b/.github/workflows/code.yml
index ef74d363..08446c97 100644
--- a/.github/workflows/code.yml
+++ b/.github/workflows/code.yml
@@ -5,7 +5,7 @@ on:
   pull_request:
 env:
   # The target python version, which must match the Dockerfile version
-  CONTAINER_PYTHON: "3.11"
+  CONTAINER_PYTHON: "3.12"
 
 jobs:
   lint:
@@ -32,8 +32,7 @@ jobs:
       fail-fast: false
       matrix:
         os: ["ubuntu-latest"] # can add windows-latest, macos-latest
-        python: ["3.9", "3.10", "3.11"]
-        jsonschema: [2, 3]
+        python: ["3.9", "3.10", "3.11", "3.12"]
 
         install: ["-e .[dev]"]
         # Make one version be non-editable to test both paths of version code
@@ -59,7 +58,6 @@ jobs:
         uses: ./.github/actions/install_requirements
         with:
           python_version: ${{ matrix.python }}
-          jsonschema_version: ${{ matrix.jsonschema }}
           requirements_file: requirements-test-${{ matrix.os }}-${{matrix.python }}-${{ matrix.jsonschema }}.txt
           install_options: ${{ matrix.install }}
 
diff --git a/event_model/__init__.py b/event_model/__init__.py
index 3fec64a5..2abe7edc 100644
--- a/event_model/__init__.py
+++ b/event_model/__init__.py
@@ -7,15 +7,12 @@
 import sys
 import threading
 import time as ttime
-import types
 import uuid
 import warnings
 import weakref
 from collections import defaultdict, deque
 from dataclasses import dataclass
 from enum import Enum
-from functools import partial
-from importlib.metadata import metadata
 from importlib.metadata import version as importlib_version
 from typing import (
     Any,
@@ -35,7 +32,6 @@
 
 import jsonschema
 import numpy
-from packaging import version
 from typing_extensions import Literal
 
 from .documents.datum import Datum
@@ -1806,43 +1802,26 @@ class MismatchedDataKeys(InvalidData):
     with ref.open() as f:
         schemas[name] = json.load(f)
 
-# We pin jsonschema >=3.0.0 in requirements.txt but due to pip's dependency
-# resolution it is easy to end up with an environment where that pin is not
-# respected. Thus, we maintain best-effort support for 2.x.
 
-if version.parse(metadata("jsonschema")["version"]) >= version.parse("3.0.0"):
+def _is_array(checker, instance):
+    return (
+        jsonschema.validators.Draft7Validator.TYPE_CHECKER.is_type(instance, "array")
+        or isinstance(instance, tuple)
+        or hasattr(instance, "__array__")
+    )
 
-    def _is_array(checker, instance):
-        return (
-            jsonschema.validators.Draft7Validator.TYPE_CHECKER.is_type(
-                instance, "array"
-            )
-            or isinstance(instance, tuple)
-            or hasattr(instance, "__array__")
-        )
 
-    _array_type_checker = jsonschema.validators.Draft7Validator.TYPE_CHECKER.redefine(
-        "array", _is_array
-    )
+_array_type_checker = jsonschema.validators.Draft7Validator.TYPE_CHECKER.redefine(
+    "array", _is_array
+)
 
-    _Validator = jsonschema.validators.extend(
-        jsonschema.validators.Draft7Validator, type_checker=_array_type_checker
-    )
+_Validator = jsonschema.validators.extend(
+    jsonschema.validators.Draft7Validator, type_checker=_array_type_checker
+)
 
-    schema_validators = {
-        name: _Validator(schema=schema) for name, schema in schemas.items()
-    }
-else:
-    # Make objects that mock the one method on the jsonschema 3.x
-    # Draft7Validator API that we need.
-    schema_validators = {
-        name: types.SimpleNamespace(
-            validate=partial(
-                jsonschema.validate, schema=schema, types={"array": (list, tuple)}
-            )
-        )
-        for name, schema in schemas.items()
-    }
+schema_validators = {
+    name: _Validator(schema=schema) for name, schema in schemas.items()
+}
 
 
 @dataclass
diff --git a/event_model/tests/test_em.py b/event_model/tests/test_em.py
index 866810b7..45ead48e 100644
--- a/event_model/tests/test_em.py
+++ b/event_model/tests/test_em.py
@@ -1,16 +1,12 @@
 import json
 import pickle
-from distutils.version import LooseVersion
 
-import jsonschema
 import numpy
 import pytest
 
 import event_model
 from event_model.documents.stream_datum import StreamRange
 
-JSONSCHEMA_2 = LooseVersion(jsonschema.__version__) < LooseVersion("3.0.0")
-
 
 def test_documents():
     dn = event_model.DocumentNames
@@ -1008,7 +1004,6 @@ def test_pickle_filler():
     assert filler == deserialized
 
 
-@pytest.mark.skipif(JSONSCHEMA_2, reason="requres jsonschema >= 3")
 def test_array_like():
     "Accept any __array__-like as an array."
     dask_array = pytest.importorskip("dask.array")
diff --git a/event_model/tests/test_projections.py b/event_model/tests/test_projections.py
index 64587906..eed493ad 100644
--- a/event_model/tests/test_projections.py
+++ b/event_model/tests/test_projections.py
@@ -1,13 +1,8 @@
-from distutils.version import LooseVersion
-
-import jsonschema
 import pytest
 from jsonschema.exceptions import ValidationError
 
 import event_model
 
-skip_json_validations = LooseVersion(jsonschema.__version__) < LooseVersion("3.0.0")
-
 
 @pytest.fixture
 def start():
@@ -28,9 +23,6 @@ def test_projection_schema(start):
     event_model.schema_validators[event_model.DocumentNames.start].validate(start)
 
 
-@pytest.mark.skipif(
-    skip_json_validations, reason="projection schema uses draft7 conditions"
-)
 def test_bad_calc_field(start):
     bad_calc_projections = [
         # calc requires the calc fields
@@ -56,9 +48,6 @@ def test_bad_calc_field(start):
         event_model.schema_validators[event_model.DocumentNames.start].validate(start)
 
 
-@pytest.mark.skipif(
-    skip_json_validations, reason="projection schema uses draft7 conditions"
-)
 def test_bad_configuration_field(start):
     bad_configuration_projections = [
         {
@@ -85,9 +74,6 @@ def test_bad_configuration_field(start):
         event_model.schema_validators[event_model.DocumentNames.start].validate(start)
 
 
-@pytest.mark.skipif(
-    skip_json_validations, reason="projection schema uses draft7 conditions"
-)
 def test_bad_event_field(start):
     bad_event_projections = [
         {
@@ -111,9 +97,6 @@ def test_bad_event_field(start):
         event_model.schema_validators[event_model.DocumentNames.start].validate(start)
 
 
-@pytest.mark.skipif(
-    skip_json_validations, reason="projection schema uses draft7 conditions"
-)
 def test_bad_location_field(start):
     bad_event_projections = [
         {
@@ -137,9 +120,6 @@ def test_bad_location_field(start):
         event_model.schema_validators[event_model.DocumentNames.start].validate(start)
 
 
-@pytest.mark.skipif(
-    skip_json_validations, reason="projection schema uses draft7 conditions"
-)
 def test_bad_static_field(start):
     bad_event_projections = [
         {
diff --git a/pyproject.toml b/pyproject.toml
index 7a7d8ca8..9bad3631 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -11,13 +11,13 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
 ]
 description = "Data model used by the bluesky ecosystem"
 dependencies = [
     "importlib-resources",
-    "jsonschema",
+    "jsonschema>=3",
     "numpy",
-    "packaging",
     "typing_extensions"
 ]
 dynamic = ["version"]
@@ -117,8 +117,8 @@ skipsdist=True
 # Don't create a virtualenv for the command, requires tox-direct plugin
 direct = True
 passenv = *
-allowlist_externals = 
-    pytest 
+allowlist_externals =
+    pytest
     pre-commit
     mypy
     sphinx-build