diff --git a/pyproject.toml b/pyproject.toml
index 38a46eb1..20720af3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -15,6 +15,7 @@ classifiers = [
   "Programming Language :: Python :: 3.10",
   "Programming Language :: Python :: 3.11",
   "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
   "Topic :: Software Development",
 ]
 requires-python = ">=3.8"
diff --git a/taskcluster/kinds/docker-image/kind.yml b/taskcluster/kinds/docker-image/kind.yml
index 4d8aae6e..47cb1bf7 100644
--- a/taskcluster/kinds/docker-image/kind.yml
+++ b/taskcluster/kinds/docker-image/kind.yml
@@ -30,7 +30,7 @@ tasks:
     python:
         symbol: I(py)
         args:
-            PYTHON_VERSIONS: "3.12 3.11 3.10 3.9 3.8"
+            PYTHON_VERSIONS: "3.13 3.12 3.11 3.10 3.9 3.8"
     run-task:
         symbol: I(rt)
     skopeo:
diff --git a/taskcluster/kinds/test/kind.yml b/taskcluster/kinds/test/kind.yml
index 2866cdb7..7cfce2db 100644
--- a/taskcluster/kinds/test/kind.yml
+++ b/taskcluster/kinds/test/kind.yml
@@ -40,7 +40,7 @@ tasks:
         description: "Run `unit tests` to validate the latest changes"
         attributes:
             artifact_prefix: public
-        python-versions: ["3.12", "3.11", "3.10", "3.9", "3.8"]
+        python-versions: ["3.13", "3.12", "3.11", "3.10", "3.9", "3.8"]
         run:
             command: >-
                 uv run coverage run --data-file $MOZ_ARTIFACT_DIR/coverage --context=$PYTHON_VERSION -m pytest -vv