diff --git a/.github/workflows/test-suite.yml b/.github/workflows/test-suite.yml
index de88c91..73d9b96 100644
--- a/.github/workflows/test-suite.yml
+++ b/.github/workflows/test-suite.yml
@@ -44,7 +44,7 @@ jobs:
           - "3.10"
           - "3.11"
           - "3.12"
-          - "3.13-dev"
+          - "3.13"
         os:
           - ubuntu-latest
           - windows-latest
diff --git a/docs/changelog.md b/docs/changelog.md
index e81cd70..a702152 100644
--- a/docs/changelog.md
+++ b/docs/changelog.md
@@ -11,6 +11,8 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - `pythonjsonlogger.[orjson,msgspec]` now throws a `pythonjsonlogger.exception.MissingPackageError` when required libraries are not available. These contain more information about what is missing whilst still being an `ImportError`.
 - `defaults` parameter is no longer ignored and now conforms to the standard library. Setting a defaults dictionary will add the specified keys if the those keys do not exist in a record or weren't passed by the `extra` parameter when logging a message.
 - `typing_extensions` is only installed on Python version < 3.10.
+- Support Python 3.13
+  - `msgspec` has only been tested against pre-release versions.
 
 Thanks @cjwatson and @bharel
 
diff --git a/pyproject.toml b/pyproject.toml
index c05790a..2cc203a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -34,6 +34,7 @@ classifiers = [
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
     "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "Topic :: System :: Logging",
     "Typing :: Typed",
 ]
@@ -45,8 +46,9 @@ GitHub = "https://github.com/nhairs/python-json-logger"
 [project.optional-dependencies]
 dev = [
     ## Optional but required for dev
-    "orjson;implementation_name!='pypy' and python_version<'3.13'",
+    "orjson;implementation_name!='pypy'",
     "msgspec;implementation_name!='pypy' and python_version<'3.13'",
+    "msgspec-python313-pre;implementation_name!='pypy' and python_version=='3.13'",
     ## Lint
     "validate-pyproject[all]",
     "black",