diff --git a/.circleci/config.yml b/.circleci/config.yml
index b84fad7ef..c9074e83c 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -193,6 +193,32 @@ jobs:
           paths:
             - ./.tox/externaldata
       - coverage
+  py313:
+    working_directory: ~/project
+    machine:
+      image: ubuntu-2004:202111-02
+    steps:
+      - checkout
+      - upgradepython:
+          version: "3.13"
+      - run:
+          name: Use pyenv to set python version
+          command: |
+            pyenv versions
+            pyenv global 3.13
+      - docker-compose
+      - restore_cache:
+          name: Restore external data cache
+          keys:
+            - tox-externaldata-{{ checksum "tests/datastore.py" }}
+      - tox:
+          env: py313
+      - save_cache:
+          name: Save external data cache
+          key: tox-externaldata-{{ checksum "tests/datastore.py" }}
+          paths:
+            - ./.tox/externaldata
+      - coverage
   lint_and_docs:
     working_directory: ~/project
     docker:
@@ -364,6 +390,13 @@ workflows:
             branches:
               ignore:
                 - gh-pages
+      - py313:
+          filters:
+            tags:
+              only: /^v.*/
+            branches:
+              ignore:
+                - gh-pages
       - lint_and_docs:
           filters:
             tags:
@@ -392,6 +425,7 @@ workflows:
             - py310
             - py311
             - py312
+            - py313
             - lint_and_docs
             - wheels
             - docker
@@ -409,6 +443,7 @@ workflows:
             - py310
             - py311
             - py312
+            - py313
             - lint_and_docs
             - docker
             - wheels
@@ -433,6 +468,7 @@ workflows:
       - py310
       - py311
       - py312
+      - py313
       - lint_and_docs
       - docker
       - wheels
@@ -443,6 +479,7 @@ workflows:
             - py310
             - py311
             - py312
+            - py313
             - lint_and_docs
             - docker
             - wheels
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 69b080381..94f47c7fe 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -22,7 +22,7 @@ jobs:
     if: github.repository == 'DigitalSlideArchive/HistomicsTK' && ( startsWith(github.ref, 'refs/tags/v') || github.ref == 'refs/heads/master' )
     strategy:
       matrix:
-        python: ["3.8", "3.9", "3.10", "3.11", "3.12"]
+        python: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -65,10 +65,10 @@ jobs:
       matrix:
         # See matplotlib for some of the rationale of this
         buildplat:
-          - [ubuntu-latest, x86_64]
+          - [ubuntu-latest, "x86_64 aarch64"]
           - [macos-latest, "x86_64 arm64"]
           - [windows-latest, auto64]
-        python: ["cp38", "cp39", "cp310", "cp311", "cp312"]
+        python: ["cp38", "cp39", "cp310", "cp311", "cp312", "cp313"]
       fail-fast: false
 
     steps: