Bernd Verst (berndverst) · Oct 10, 2026 · Oct 10, 2026
diff --git a/.github/workflows/durabletask-azurefunctions.yml b/.github/workflows/durabletask-azurefunctions.yml
@@ -33,7 +33,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.13", "3.14"]
+        python-version: ["3.13", "3.14", "3.15"]
     needs: lint
     runs-on: ubuntu-latest
     steps:

diff --git a/.github/workflows/durabletask-azuremanaged.yml b/.github/workflows/durabletask-azuremanaged.yml
@@ -18,10 +18,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-    - name: Set up Python 3.14
+    - name: Set up Python 3.15
       uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
       with:
-        python-version: 3.14
+        python-version: "3.15"
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
@@ -33,7 +33,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
     needs: lint
     runs-on: ubuntu-latest
     steps:

diff --git a/.github/workflows/durabletask.yml b/.github/workflows/durabletask.yml
@@ -18,10 +18,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
-    - name: Set up Python 3.14
+    - name: Set up Python 3.15
       uses: actions/setup-python@5fda3b95a4ea91299a34e894583c3862153e4b97 # v7.0.0
       with:
-        python-version: 3.14
+        python-version: "3.15"
     - name: Install dependencies
       run: |
         python -m pip install --upgrade pip
@@ -33,7 +33,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14"]
+        python-version: ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
     needs: lint-and-unit-tests
     runs-on: ubuntu-latest
     steps:

diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -7,6 +7,10 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
 
+ADDED
+
+- Added Python 3.15 support.
+
 FIXED
 
 - Single-instance `purge_orchestration()` requests now explicitly target

diff --git a/azure-functions-durable/CHANGELOG.md b/azure-functions-durable/CHANGELOG.md
@@ -7,6 +7,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## Unreleased
 
+ADDED
+
+- Added Python 3.15 support. The minimum supported Python version remains 3.13.
+
 FIXED
 
 - With the corresponding core `durabletask` SDK fix, single-instance

diff --git a/azure-functions-durable/pyproject.toml b/azure-functions-durable/pyproject.toml
@@ -21,6 +21,9 @@ keywords = [
 classifiers = [
   "Development Status :: 4 - Beta",
   "Programming Language :: Python :: 3",
+  "Programming Language :: Python :: 3.13",
+  "Programming Language :: Python :: 3.14",
+  "Programming Language :: Python :: 3.15",
   "License :: OSI Approved :: MIT License",
 ]
 requires-python = ">=3.13"

diff --git a/docs/development.md b/docs/development.md
@@ -15,15 +15,17 @@ The `ci` session runs linting, strict type checks, core SDK and Azure Managed
 tests on Python 3.10, Azure Functions unit tests on Python 3.13, and Azure
 Functions end-to-end tests on Python 3.13. It intentionally runs one
 representative version rather than the complete CI matrix, keeping routine
-local validation fast. To use another supported version (3.10--3.14) for the
+local validation fast. To use another supported version (3.10--3.15) for the
 core SDK and Azure Managed tests, pass it after `--`:
 
 ```sh
-nox -s ci -- 3.14
+nox -s ci -- 3.15
 ```
 
 Run the versioned test sessions directly when a change needs complete matrix
 coverage, for example `nox -s core_tests` or `nox -s azuremanaged_tests`.
+Azure Functions unit tests cover Python 3.13--3.15; use
+`nox -s functions_unit-3.15` to target Python 3.15 specifically.
 Nox fails rather than silently skipping a session when its required Python
 interpreter is unavailable.
 

diff --git a/durabletask-azuremanaged/CHANGELOG.md b/durabletask-azuremanaged/CHANGELOG.md
@@ -7,6 +7,10 @@ adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0.html).
 
 ## Unreleased
 
+ADDED
+
+- Added Python 3.15 support.
+
 FIXED
 
 - With the corresponding core `durabletask` SDK fix, single-instance

diff --git a/durabletask-azuremanaged/pyproject.toml b/durabletask-azuremanaged/pyproject.toml
@@ -20,6 +20,12 @@ keywords = [
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Programming Language :: Python :: 3",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
+  "Programming Language :: Python :: 3.14",
+  "Programming Language :: Python :: 3.15",
   "License :: OSI Approved :: MIT License",
 ]
 requires-python = ">=3.10"

diff --git a/noxfile.py b/noxfile.py
@@ -46,7 +46,7 @@
 E2E_APPS_DIR = REPO_ROOT / "tests" / "azure-functions-durable" / "e2e" / "apps"
 # Sample apps that need an in-app virtual environment for the E2E suite.
 E2E_APPS = ("v1_style", "dtask_style", "tracing")
-PYTHON_VERSIONS = ("3.10", "3.11", "3.12", "3.13", "3.14")
+PYTHON_VERSIONS = ("3.10", "3.11", "3.12", "3.13", "3.14", "3.15")
 DEFAULT_CI_PYTHON = "3.10"
 
 
@@ -446,7 +446,7 @@ def azuremanaged_tests(session: nox.Session) -> None:
         _stop_dts_emulator(container_name)
 
 
-@nox.session(python=["3.13", "3.14"])
+@nox.session(python=["3.13", "3.14", "3.15"])
 def functions_unit(session: nox.Session) -> None:
     """Run the azure-functions-durable unit tests (no func/azurite required)."""
     session.install("-r", "requirements.txt")
@@ -524,7 +524,7 @@ def ci(session: nox.Session) -> None:
     """Run the representative local lint, type, test, emulator, and E2E checks.
 
     Pass a core/Azure Managed Python version after ``--`` to override the
-    default representative version, for example ``nox -s ci -- 3.14``.
+    default representative version, for example ``nox -s ci -- 3.15``.
     """
     if len(session.posargs) > 1 or (
         session.posargs and session.posargs[0] not in PYTHON_VERSIONS

diff --git a/pyproject.toml b/pyproject.toml
@@ -19,6 +19,12 @@ keywords = [
 classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Programming Language :: Python :: 3",
+  "Programming Language :: Python :: 3.10",
+  "Programming Language :: Python :: 3.11",
+  "Programming Language :: Python :: 3.12",
+  "Programming Language :: Python :: 3.13",
+  "Programming Language :: Python :: 3.14",
+  "Programming Language :: Python :: 3.15",
   "License :: OSI Approved :: MIT License",
 ]
 requires-python = ">=3.10"
-Original file line number
+Diff line change
@@ Expand Up @@
     ## Unreleased
+    ADDED
+    - Added Python 3.15 support.
     FIXED
     - Single-instance `purge_orchestration()` requests now explicitly target
@@ Expand Down @@