diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 1e98825..cf89ed5 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -11,7 +11,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["pypy3.10", "3.8", "3.9", "3.10", "3.11", "3.12"]
+        python-version: ["pypy3.10", "3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
         os: [windows-latest, macos-latest, ubuntu-latest]
 
     steps:
diff --git a/pyproject.toml b/pyproject.toml
index 63f5f55..4255c4a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -22,6 +22,7 @@ classifiers = [
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
   "Programming Language :: Python :: Implementation :: CPython",
   "Programming Language :: Python :: Implementation :: PyPy",
   "Topic :: Text Processing",
diff --git a/tox.ini b/tox.ini
index 9efb293..6202add 100644
--- a/tox.ini
+++ b/tox.ini
@@ -3,7 +3,7 @@ requires =
     tox>=4.2
 env_list =
     lint
-    py{py3, 312, 311, 310, 39, 38}
+    py{py3, 313, 312, 311, 310, 39, 38}
 
 [testenv]
 extras =