diff --git a/.github/workflows/ci-slow.yaml b/.github/workflows/ci-slow.yaml
index 76f8ca2..15af28b 100644
--- a/.github/workflows/ci-slow.yaml
+++ b/.github/workflows/ci-slow.yaml
@@ -13,13 +13,13 @@ jobs:
           - python-version: '3.11'
             os: macos-latest
             EXTRA: true
-          - python-version: '3.12'
+          - python-version: '3.13'
             os: macos-latest
             EXTRA: true
           - python-version: '3.7'
             os: windows-latest
             EXTRA: true
-          - python-version: '3.12'
+          - python-version: '3.13'
             os: windows-latest
             EXTRA: true
     steps:
@@ -31,11 +31,6 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
-      - name: Install setuptools on python 3.12+
-        if: ${{ matrix.python-version >= '3.12' }}
-        run: |
-          pip install setuptools
-
       - name: Install cdx_toolkit
         run: pip install .[test]
 
diff --git a/.github/workflows/ci.yaml b/.github/workflows/ci.yaml
index c43c4ca..7248d41 100644
--- a/.github/workflows/ci.yaml
+++ b/.github/workflows/ci.yaml
@@ -1,7 +1,6 @@
 name: CI
 
 on:
-  # runtime is erratic and up to an hour
   push:
     branches:
     - main
@@ -16,11 +15,11 @@ jobs:
       fail-fast: false
       max-parallel: 1  # avoids ever triggering a rate limit
       matrix:
-        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12']
+        python-version: ['3.7', '3.8', '3.9', '3.10', '3.11', '3.12', '3.13']
         os: [ubuntu-latest]
         EXTRA: [false]  # used to force includes to get included
         include:
-          - python-version: '3.12'
+          - python-version: '3.13'
             os: ubuntu-latest
             EXTRA: true
             env:
@@ -38,11 +37,6 @@ jobs:
         with:
           python-version: ${{ matrix.python-version }}
 
-      - name: Install setuptools on python 3.12+
-        if: ${{ matrix.python-version >= '3.12' }}
-        run: |
-          pip install setuptools
-
       - name: Install cdx_toolkit
         run: pip install .[test]
 
diff --git a/setup.py b/setup.py
index bceaefb..58a3b84 100755
--- a/setup.py
+++ b/setup.py
@@ -66,6 +66,7 @@
         'Programming Language :: Python :: 3.10',
         'Programming Language :: Python :: 3.11',
         'Programming Language :: Python :: 3.12',
+        'Programming Language :: Python :: 3.13',
         'Programming Language :: Python :: 3 :: Only',
     ],
 )