diff --git a/.buildkite/generatesteps.py b/.buildkite/generatesteps.py
index 8c5e30d..922a87e 100644
--- a/.buildkite/generatesteps.py
+++ b/.buildkite/generatesteps.py
@@ -54,9 +54,9 @@ def benchmark_to_steps(python, connection_class, nox_session):
 
 if __name__ == "__main__":
     steps = []
-    for python in ["3.9", "3.10", "3.11", "3.12"]:
+    for python in ["3.9", "3.10", "3.11", "3.12", "3.13"]:
         for connection_class in ["urllib3", "requests"]:
             steps.extend(benchmark_to_steps(python, connection_class, "test"))
     steps.extend(benchmark_to_steps("3.9", "urllib3", "test_otel"))
-    steps.extend(benchmark_to_steps("3.12", "urllib3", "test_otel"))
+    steps.extend(benchmark_to_steps("3.13", "urllib3", "test_otel"))
     print(yaml.dump({"steps": steps}, Dumper=yaml.Dumper, sort_keys=False))
diff --git a/.buildkite/teardown-tests b/.buildkite/teardown-tests
index 81b70e5..cb2ae44 100644
--- a/.buildkite/teardown-tests
+++ b/.buildkite/teardown-tests
@@ -2,13 +2,13 @@
 set -euo pipefail
 
 # Default environment variables
-export PYTHON_VERSION="${PYTHON_VERSION:=3.12}"
+export PYTHON_VERSION="${PYTHON_VERSION:=3.13}"
 export PYTHON_CONNECTION_CLASS="${PYTHON_CONNECTION_CLASS:=urllib3}"
 export EC_PROJECT_NAME=$(buildkite-agent meta-data get $EC_PROJECT_PREFIX)
 
 # fetch cloud creds used by qaf
 CLOUD_ACCESS_KEY=$(vault read -field="$EC_ENV" secret/ci/elastic-elasticsearch-serverless-python/cloud-access)
-echo "{\"api_key\":{\"$EC_ENV\":\"$CLOUD_ACCESS_KEY\"}}" > "$(pwd)/cloud.json"
+echo "{\"api_key\":{\"$EC_ENV\":\"$CLOUD_ACCESS_KEY\"}}" >"$(pwd)/cloud.json"
 
 run_qaf() {
   cmd=$1
diff --git a/.github/Dockerfile b/.github/Dockerfile
index 341f3ca..039d691 100644
--- a/.github/Dockerfile
+++ b/.github/Dockerfile
@@ -1,4 +1,4 @@
-ARG PYTHON_VERSION=3.12
+ARG PYTHON_VERSION=3.13
 FROM python:${PYTHON_VERSION}
 
 WORKDIR /code/elasticsearch-serverless-python
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index d0900d7..5cfd15a 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -59,7 +59,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.9", "3.10", "3.11", "3.12"]
+        python-version: ["3.9", "3.10", "3.11", "3.12", "3.13"]
         experimental: [false]
         nox-session: [""]
         runs-on: ["ubuntu-latest"]
diff --git a/noxfile.py b/noxfile.py
index 6cd0514..abb21ae 100644
--- a/noxfile.py
+++ b/noxfile.py
@@ -47,14 +47,14 @@ def pytest_argv():
     ]
 
 
-@nox.session(python=["3.9", "3.10", "3.11", "3.12"])
+@nox.session(python=["3.9", "3.10", "3.11", "3.12", "3.13"])
 def test(session):
     session.install(".[dev]", env=INSTALL_ENV)
 
     session.run(*pytest_argv(), *(session.posargs))
 
 
-@nox.session(python=["3.9", "3.12"])
+@nox.session(python=["3.9", "3.13"])
 def test_otel(session):
     session.install(".[dev]", env=INSTALL_ENV)
     session.install("opentelemetry-api", "opentelemetry-sdk")
diff --git a/pyproject.toml b/pyproject.toml
index 8dd9594..199501b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -26,6 +26,7 @@ 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",
 ]