diff --git a/CHANGELOG.md b/CHANGELOG.md
index aef1e50..d7f185a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -2,14 +2,14 @@
 
 All notable changes to this project will be documented in this file.
 
-The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/),
+The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0),
 and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## [Unreleased]
 
 ### Changed
 
-- Use `dataclasses_json` for object mapping
+- Use `dataclass-wizard` for object mapping
 
 ### Fixes
 
diff --git a/README.md b/README.md
index 29b78d6..c008957 100644
--- a/README.md
+++ b/README.md
@@ -17,7 +17,7 @@ dependencies = [
 
 ### Supported Python Versions
 
-Python 3.13 is fully supported and tested, and while it should work with other Python 3 versions, we do not test for them.
+While we only actively test under Python 3.13, we strive to support all versions from Python 3.9 and above.
 
 ### Usage
 
diff --git a/pyproject.toml b/pyproject.toml
index 276a9c8..d3003f9 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -12,7 +12,7 @@ classifiers = [
   "Topic :: Software Development :: Libraries :: Python Modules",
 ]
 
-dependencies = ["requests>=2.32.3,<3", "dataclasses-json>=0.6.7,<0.7"]
+dependencies = ["requests>=2.32.3,<3", "dataclass-wizard>=0.35.0,<1.0"]
 
 [project.urls]
 Homepage = "https://github.com/Doist/todoist-api-python"
diff --git a/todoist_api_python/models.py b/todoist_api_python/models.py
index 7675bfc..1976640 100644
--- a/todoist_api_python/models.py
+++ b/todoist_api_python/models.py
@@ -3,7 +3,7 @@
 from dataclasses import dataclass, field
 from typing import Any, Literal
 
-from dataclasses_json import DataClassJsonMixin
+from dataclass_wizard import JSONPyWizard
 
 from todoist_api_python.utils import get_url_for_task
 
@@ -11,7 +11,10 @@
 
 
 @dataclass
-class Project(DataClassJsonMixin):
+class Project(JSONPyWizard):
+    class _(JSONPyWizard.Meta):  # noqa:N801
+        v1 = True
+
     color: str
     comment_count: int
     id: str
@@ -28,7 +31,10 @@ class Project(DataClassJsonMixin):
 
 
 @dataclass
-class Section(DataClassJsonMixin):
+class Section(JSONPyWizard):
+    class _(JSONPyWizard.Meta):  # noqa:N801
+        v1 = True
+
     id: str
     name: str
     order: int
@@ -36,7 +42,10 @@ class Section(DataClassJsonMixin):
 
 
 @dataclass
-class Due(DataClassJsonMixin):
+class Due(JSONPyWizard):
+    class _(JSONPyWizard.Meta):  # noqa:N801
+        v1 = True
+
     date: str
     is_recurring: bool
     string: str
@@ -44,24 +53,16 @@ class Due(DataClassJsonMixin):
     datetime: str | None = None
     timezone: str | None = None
 
-    @classmethod
-    def from_quick_add_response(cls, obj: dict[str, Any]) -> Due | None:
-        due = obj.get("due")
-
-        if not due:
-            return None
-
-        timezone = due.get("timezone")
-        datetime: str | None = due["date"] if timezone is not None else None
-
-        due["datetime"] = datetime
-        due["timezone"] = timezone
-
-        return cls.from_dict(due)
+    def __post_init__(self) -> None:
+        if not self.datetime and (self.date and self.timezone):
+            self.datetime = self.date
 
 
 @dataclass
-class Task(DataClassJsonMixin):
+class Task(JSONPyWizard):
+    class _(JSONPyWizard.Meta):  # noqa:N801
+        v1 = True
+
     assignee_id: str | None
     assigner_id: str | None
     comment_count: int
@@ -91,9 +92,6 @@ def __post_init__(self) -> None:
     @classmethod
     def from_quick_add_response(cls, obj: dict[str, Any]) -> Task:
         obj_copy = obj.copy()
-        obj_copy["due"] = (
-            Due.from_quick_add_response(obj) if obj.get("due") is not None else None
-        )
         obj_copy["comment_count"] = 0
         obj_copy["is_completed"] = False
         obj_copy["created_at"] = obj_copy.pop("added_at", None)
@@ -106,7 +104,10 @@ def from_quick_add_response(cls, obj: dict[str, Any]) -> Task:
 
 
 @dataclass
-class QuickAddResult(DataClassJsonMixin):
+class QuickAddResult(JSONPyWizard):
+    class _(JSONPyWizard.Meta):  # noqa:N801
+        v1 = True
+
     task: Task
 
     resolved_project_name: str | None = None
@@ -145,14 +146,20 @@ def from_quick_add_response(cls, obj: dict[str, Any]) -> QuickAddResult:
 
 
 @dataclass
-class Collaborator(DataClassJsonMixin):
+class Collaborator(JSONPyWizard):
+    class _(JSONPyWizard.Meta):  # noqa:N801
+        v1 = True
+
     id: str
     email: str
     name: str
 
 
 @dataclass
-class Attachment(DataClassJsonMixin):
+class Attachment(JSONPyWizard):
+    class _(JSONPyWizard.Meta):  # noqa:N801
+        v1 = True
+
     resource_type: str | None = None
 
     file_name: str | None = None
@@ -171,7 +178,10 @@ class Attachment(DataClassJsonMixin):
 
 
 @dataclass
-class Comment(DataClassJsonMixin):
+class Comment(JSONPyWizard):
+    class _(JSONPyWizard.Meta):  # noqa:N801
+        v1 = True
+
     content: str
     id: str
     posted_at: str
@@ -181,7 +191,10 @@ class Comment(DataClassJsonMixin):
 
 
 @dataclass
-class Label(DataClassJsonMixin):
+class Label(JSONPyWizard):
+    class _(JSONPyWizard.Meta):  # noqa:N801
+        v1 = True
+
     id: str
     name: str
     color: str
@@ -190,13 +203,19 @@ class Label(DataClassJsonMixin):
 
 
 @dataclass
-class AuthResult(DataClassJsonMixin):
+class AuthResult(JSONPyWizard):
+    class _(JSONPyWizard.Meta):  # noqa:N801
+        v1 = True
+
     access_token: str
     state: str | None
 
 
 @dataclass
-class Item(DataClassJsonMixin):
+class Item(JSONPyWizard):
+    class _(JSONPyWizard.Meta):  # noqa:N801
+        v1 = True
+
     id: str
     user_id: str
     project_id: str
@@ -221,13 +240,19 @@ class Item(DataClassJsonMixin):
 
 
 @dataclass
-class ItemCompletedInfo(DataClassJsonMixin):
+class ItemCompletedInfo(JSONPyWizard):
+    class _(JSONPyWizard.Meta):  # noqa:N801
+        v1 = True
+
     item_id: str
     completed_items: int
 
 
 @dataclass
-class CompletedItems(DataClassJsonMixin):
+class CompletedItems(JSONPyWizard):
+    class _(JSONPyWizard.Meta):  # noqa:N801
+        v1 = True
+
     items: list[Item]
     total: int
     completed_info: list[ItemCompletedInfo]
@@ -236,6 +261,9 @@ class CompletedItems(DataClassJsonMixin):
 
 
 @dataclass
-class Duration(DataClassJsonMixin):
+class Duration(JSONPyWizard):
+    class _(JSONPyWizard.Meta):  # noqa:N801
+        v1 = True
+
     amount: int
     unit: str
diff --git a/uv.lock b/uv.lock
index 1d0fe88..e5a1867 100644
--- a/uv.lock
+++ b/uv.lock
@@ -52,16 +52,12 @@ wheels = [
 ]
 
 [[package]]
-name = "dataclasses-json"
-version = "0.6.7"
+name = "dataclass-wizard"
+version = "0.35.0"
 source = { registry = "https://pypi.org/simple" }
-dependencies = [
-    { name = "marshmallow" },
-    { name = "typing-inspect" },
-]
-sdist = { url = "https://files.pythonhosted.org/packages/64/a4/f71d9cf3a5ac257c993b5ca3f93df5f7fb395c725e7f1e6479d2514173c3/dataclasses_json-0.6.7.tar.gz", hash = "sha256:b6b3e528266ea45b9535223bc53ca645f5208833c29229e847b3f26a1cc55fc0", size = 32227 }
+sdist = { url = "https://files.pythonhosted.org/packages/64/c5/10f2bd575b4fee1cf26b0ffa5fead2d6525f950a797566437a51fa08a94f/dataclass-wizard-0.35.0.tar.gz", hash = "sha256:8e4b254991bf93416a48e2911bb985e3787cff11f00270c3d1165d2523cb3fb6", size = 295578 }
 wheels = [
-    { url = "https://files.pythonhosted.org/packages/c3/be/d0d44e092656fe7a06b55e6103cbce807cdbdee17884a5367c68c9860853/dataclasses_json-0.6.7-py3-none-any.whl", hash = "sha256:0dbf33f26c8d5305befd61b39d2b3414e8a407bedc2834dea9b8d642666fb40a", size = 28686 },
+    { url = "https://files.pythonhosted.org/packages/3a/95/968dff23cfd82806bf0e2d1c155227717046aed5e7afd8bc0fefdc7eaaf3/dataclass_wizard-0.35.0-py2.py3-none-any.whl", hash = "sha256:3bb19292477f0bebb12e9cc9178f1a6b93d133af4ae065abf14b713142b32edf", size = 176558 },
 ]
 
 [[package]]
@@ -109,18 +105,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/2c/e1/e6716421ea10d38022b952c159d5161ca1193197fb744506875fbb87ea7b/iniconfig-2.1.0-py3-none-any.whl", hash = "sha256:9deba5723312380e77435581c6bf4935c94cbfab9b1ed33ef8d238ea168eb760", size = 6050 },
 ]
 
-[[package]]
-name = "marshmallow"
-version = "3.26.1"
-source = { registry = "https://pypi.org/simple" }
-dependencies = [
-    { name = "packaging" },
-]
-sdist = { url = "https://files.pythonhosted.org/packages/ab/5e/5e53d26b42ab75491cda89b871dab9e97c840bf12c63ec58a1919710cd06/marshmallow-3.26.1.tar.gz", hash = "sha256:e6d8affb6cb61d39d26402096dc0aee12d5a26d490a121f118d2e81dc0719dc6", size = 221825 }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/34/75/51952c7b2d3873b44a0028b1bd26a25078c18f92f256608e8d1dc61b39fd/marshmallow-3.26.1-py3-none-any.whl", hash = "sha256:3350409f20a70a7e4e11a27661187b77cdcaeb20abca41c1454fe33636bea09c", size = 50878 },
-]
-
 [[package]]
 name = "mypy"
 version = "1.15.0"
@@ -304,7 +288,7 @@ name = "todoist-api-python"
 version = "2.1.7"
 source = { editable = "." }
 dependencies = [
-    { name = "dataclasses-json" },
+    { name = "dataclass-wizard" },
     { name = "requests" },
 ]
 
@@ -321,7 +305,7 @@ dev = [
 
 [package.metadata]
 requires-dist = [
-    { name = "dataclasses-json", specifier = ">=0.6.7,<0.7" },
+    { name = "dataclass-wizard", specifier = ">=0.35.0,<1.0" },
     { name = "requests", specifier = ">=2.32.3,<3" },
 ]
 
@@ -357,19 +341,6 @@ wheels = [
     { url = "https://files.pythonhosted.org/packages/e0/86/39b65d676ec5732de17b7e3c476e45bb80ec64eb50737a8dce1a4178aba1/typing_extensions-4.13.0-py3-none-any.whl", hash = "sha256:c8dd92cc0d6425a97c18fbb9d1954e5ff92c1ca881a309c45f06ebc0b79058e5", size = 45683 },
 ]
 
-[[package]]
-name = "typing-inspect"
-version = "0.9.0"
-source = { registry = "https://pypi.org/simple" }
-dependencies = [
-    { name = "mypy-extensions" },
-    { name = "typing-extensions" },
-]
-sdist = { url = "https://files.pythonhosted.org/packages/dc/74/1789779d91f1961fa9438e9a8710cdae6bd138c80d7303996933d117264a/typing_inspect-0.9.0.tar.gz", hash = "sha256:b23fc42ff6f6ef6954e4852c1fb512cdd18dbea03134f91f856a95ccc9461f78", size = 13825 }
-wheels = [
-    { url = "https://files.pythonhosted.org/packages/65/f3/107a22063bf27bdccf2024833d3445f4eea42b2e598abfbd46f6a63b6cb0/typing_inspect-0.9.0-py3-none-any.whl", hash = "sha256:9ee6fc59062311ef8547596ab6b955e1b8aa46242d854bfc78f4f6b0eff35f9f", size = 8827 },
-]
-
 [[package]]
 name = "urllib3"
 version = "2.3.0"