Update supported Python versions (Python 3.9 EOL 10/2025)

.github/workflows/test.yml

@@ -62,7 +62,7 @@ jobs:
 
     strategy:
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13']
+        python-version: ['3.10', '3.11', '3.12', '3.13', '3.14', '3.15']
 
     steps:
     - name: Checkout code

docs/get-started/quick-start-guide.md

@@ -11,7 +11,7 @@ Your feedback on this version of our client is appreciated. Please raise an issu
 
 ## Dependencies
 
-This package requires [Python 3.9 or greater](https://python.org/downloads/). A virtual environment is strongly recommended.
+This package requires [Python 3.10 or greater](https://python.org/downloads/). A virtual environment is strongly recommended.
 
 You will need Planet credentials to use this SDK. You can learn more about authentication options and where to find your credentials in our [authentication documentation](https://docs.planet.com/develop/authentication/).
 

noxfile.py

@@ -37,7 +37,7 @@ def coverage(session):
     session.run('coverage', 'report')
 
 
-@nox.session(python=["3.9", "3.10", "3.11", "3.12", "3.13"])
+@nox.session(python=["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"])
 def test(session):
     session.run('python', '-m', 'ensurepip', '--upgrade')
     session.install('-U', 'setuptools')

pyproject.toml

@@ -17,7 +17,7 @@ dependencies = [
   "planet-auth>=2.1.0",
 ]
 readme = "README.md"
-requires-python = ">=3.9"
+requires-python = ">=3.10"
 keywords = ["planet", "api", "sdk", "client"]
 classifiers = [
   "Development Status :: 5 - Production/Stable",