diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 5720254..0212a69 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -6,6 +6,10 @@ on:
       - release/**
   pull_request:
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   dist:
     name: Create Distribution
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ce59e5e..ed8bdba 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -16,7 +16,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-          python-version: ["3.11.14", "3.12.13"]
+          python-version: ["3.13.1"]
     steps:
       - name: Configure git
         run: |
@@ -29,7 +29,7 @@ jobs:
       - name: Install dependencies
         run: uv sync --python ${{ matrix.python-version }}
       - name: Run tests
-        run: uv run pytest --cov --junitxml=junit.xml -o junit_family=legacy
+        run: uv run pytest -n4 --cov --junitxml=junit.xml -o junit_family=legacy
       - name: Upload results to Codecov
         uses: codecov/codecov-action@e28ff129e5465c2c0dcc6f003fc735cb6ae0c673 # v4.5.0
         with:
diff --git a/.python-version b/.python-version
index 28d9a01..c10780c 100644
--- a/.python-version
+++ b/.python-version
@@ -1 +1 @@
-3.12.13
+3.13.1
diff --git a/README.md b/README.md
index 91fdfda..4ef98c5 100644
--- a/README.md
+++ b/README.md
@@ -173,5 +173,5 @@ networks:
 ```sh
 uv sync
 direnv allow
-pytest
+pytest -n4
 ```
diff --git a/pyproject.toml b/pyproject.toml
index 77026d7..058eb07 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -6,6 +6,7 @@ build-backend = "setuptools.build_meta"
 name = "devservices"
 version = "1.2.4"
 # 3.11 is just for internal pypi compat
+# but we test/support on 3.13
 requires-python = ">=3.11"
 dependencies = [
     "pyyaml",
@@ -21,13 +22,14 @@ dev = [
     "freezegun",
     "mypy",
     "pre-commit",
-    "pytest",
+    "pytest>9",
     "pytest-cov",
     "ruff",
     "setuptools>=70",
     "shellcheck-py",
     "wheel",
     "types-PyYAML",
+    "pytest-xdist>=3.5.0",
 ]
 
 [project.scripts]
@@ -40,7 +42,7 @@ find = {}
 url = "https://pypi.devinfra.sentry.io/simple"
 
 [tool.mypy]
-python_version = "3.12"
+python_version = "3.13"
 strict = true
 ignore_missing_imports = true
 
diff --git a/uv.lock b/uv.lock
index 704e70c..a08c52e 100644
--- a/uv.lock
+++ b/uv.lock
@@ -86,6 +86,7 @@ dev = [
     { name = "pre-commit" },
     { name = "pytest" },
     { name = "pytest-cov" },
+    { name = "pytest-xdist" },
     { name = "ruff" },
     { name = "setuptools" },
     { name = "shellcheck-py" },
@@ -108,8 +109,9 @@ dev = [
     { name = "freezegun" },
     { name = "mypy" },
     { name = "pre-commit" },
-    { name = "pytest" },
+    { name = "pytest", specifier = ">9" },
     { name = "pytest-cov" },
+    { name = "pytest-xdist", specifier = ">=3.5.0" },
     { name = "ruff" },
     { name = "setuptools", specifier = ">=70" },
     { name = "shellcheck-py" },
@@ -125,6 +127,14 @@ wheels = [
     { url = "https://pypi.devinfra.sentry.io/wheels/distlib-0.4.0-py2.py3-none-any.whl", hash = "sha256:9659f7d87e46584a30b5780e43ac7a2143098441670ff0a49d5f9034c54a6c16" },
 ]
 
+[[package]]
+name = "execnet"
+version = "2.0.2"
+source = { registry = "https://pypi.devinfra.sentry.io/simple" }
+wheels = [
+    { url = "https://pypi.devinfra.sentry.io/wheels/execnet-2.0.2-py3-none-any.whl", hash = "sha256:88256416ae766bc9e8895c76a87928c0012183da3cc4fc18016e6f050e025f41" },
+]
+
 [[package]]
 name = "filelock"
 version = "3.20.3"
@@ -267,6 +277,14 @@ wheels = [
     { url = "https://pypi.devinfra.sentry.io/wheels/pre_commit-4.2.0-py2.py3-none-any.whl", hash = "sha256:a009ca7205f1eb497d10b845e52c838a98b6cdd2102a6c8e4540e94ee75c58bd" },
 ]
 
+[[package]]
+name = "pygments"
+version = "2.19.2"
+source = { registry = "https://pypi.devinfra.sentry.io/simple" }
+wheels = [
+    { url = "https://pypi.devinfra.sentry.io/wheels/pygments-2.19.2-py3-none-any.whl", hash = "sha256:86540386c03d588bb81d44bc3928634ff26449851e99741617ecb9037ee5ec0b" },
+]
+
 [[package]]
 name = "pyproject-hooks"
 version = "1.2.0"
@@ -277,16 +295,17 @@ wheels = [
 
 [[package]]
 name = "pytest"
-version = "8.3.3"
+version = "9.0.2"
 source = { registry = "https://pypi.devinfra.sentry.io/simple" }
 dependencies = [
     { name = "colorama", marker = "sys_platform == 'win32'" },
     { name = "iniconfig" },
     { name = "packaging" },
     { name = "pluggy" },
+    { name = "pygments" },
 ]
 wheels = [
-    { url = "https://pypi.devinfra.sentry.io/wheels/pytest-8.3.3-py3-none-any.whl", hash = "sha256:a6853c7375b2663155079443d2e45de913a911a11d669df02a50814944db57b2" },
+    { url = "https://pypi.devinfra.sentry.io/wheels/pytest-9.0.2-py3-none-any.whl", hash = "sha256:711ffd45bf766d5264d487b917733b453d917afd2b0ad65223959f59089f875b" },
 ]
 
 [[package]]
@@ -301,6 +320,18 @@ wheels = [
     { url = "https://pypi.devinfra.sentry.io/wheels/pytest_cov-4.1.0-py3-none-any.whl", hash = "sha256:6ba70b9e97e69fcc3fb45bfeab2d0a138fb65c4d0d6a41ef33983ad114be8c3a" },
 ]
 
+[[package]]
+name = "pytest-xdist"
+version = "3.5.0"
+source = { registry = "https://pypi.devinfra.sentry.io/simple" }
+dependencies = [
+    { name = "execnet" },
+    { name = "pytest" },
+]
+wheels = [
+    { url = "https://pypi.devinfra.sentry.io/wheels/pytest_xdist-3.5.0-py3-none-any.whl", hash = "sha256:d075629c7e00b611df89f490a5063944bee7a4362a5ff11c7cc7824a03dfce24" },
+]
+
 [[package]]
 name = "python-dateutil"
 version = "2.9.0.post0"