jeremykubica · Oct 12, 2026 · Oct 12, 2026 · Oct 12, 2026 · Oct 12, 2026 · Oct 12, 2026
diff --git a/.copier-answers.yml b/.copier-answers.yml
@@ -21,10 +21,10 @@ project_license: BSD
 project_name: python-project-template
 project_organization: lincc-frameworks
 python_versions:
-- '3.9'
 - '3.10'
 - '3.11'
 - '3.12'
 - '3.13'
 - '3.14'
+- '3.15'
 test_lowest_version: none
diff --git a/.github/workflows/smoke-test.yml b/.github/workflows/smoke-test.yml
@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python-version: ['3.10', '3.11', '3.12', '3.13', '3.14', '3.15']
 
     steps:
     - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1

diff --git a/.github/workflows/testing-and-coverage.yml b/.github/workflows/testing-and-coverage.yml
@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        python-version: ['3.9', '3.10', '3.11', '3.12', '3.13', '3.14']
+        python-version: ['3.10', '3.11', '3.12', '3.13', '3.14', '3.15']
 
     steps:
     - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1

diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
@@ -4,7 +4,7 @@ repos:
     # This hook should always pass. It will print a message if the local version 
     # is out of date.
   - repo: https://github.com/lincc-frameworks/pre-commit-hooks
-    rev: v0.2.2
+    rev: 439dda8bd784f4aa721851ecec03877df286f6b5
     hooks:
       - id: check-lincc-frameworks-template-version
         name: Check template version
@@ -23,7 +23,7 @@ repos:
         entry: jupyter nbconvert --clear-output
     # Prevents committing directly branches named 'main' and 'master'.
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v6.0.0
+    rev: 3e8a8703264a2f4a69428a0aa4dcb512790b2c8c
     hooks:
       - id: no-commit-to-branch
         name: Prevent main branch commits
@@ -34,20 +34,20 @@ repos:
         args: ['--maxkb=500']
     # Verify that pyproject.toml is well formed
   - repo: https://github.com/abravalheri/validate-pyproject
-    rev: v0.24.1
+    rev: 17e12779811926f000bdfa1795f9e3735dd71ac3
     hooks:
       - id: validate-pyproject
         name: Validate pyproject.toml
         description: Verify that pyproject.toml adheres to the established schema.
     # Verify that GitHub workflows are well formed
   - repo: https://github.com/python-jsonschema/check-jsonschema
-    rev: 0.36.1
+    rev: 0494aa7fa1314e98913a41227d8f0a515b2c1049
     hooks:
       - id: check-github-workflows
         args: ["--verbose"]
     # Automatically sort the imports used in .py files
   - repo: https://github.com/pycqa/isort
-    rev: 7.0.0
+    rev: 9f905615631c545f5aea2516508109350d1d2f7d
     hooks:
       - id: isort
         name: Run isort
@@ -70,7 +70,7 @@ repos:
           ]
     # Analyze the code style and report code that doesn't adhere.
   - repo: https://github.com/psf/black
-    rev: 26.1.0
+    rev: 258e7dbf348bc23cb70b8cdf693481c04634ebcc
     hooks:
       - id: black-jupyter
         name: Format code using black

diff --git a/copier.yml b/copier.yml
@@ -87,12 +87,12 @@ python_versions:
     type: str
     multiselect: true
     choices:
-        "3.9 (end-of-life)": "3.9"
-        "3.10": "3.10"
+        "3.10 (end-of-life)": "3.10"
         "3.11": "3.11"
         "3.12": "3.12"
         "3.13": "3.13"
         "3.14": "3.14"
+        "3.15": "3.15"
 
 enforce_style:
     help: What tooling set would you like to use to enforce code style? Use SPACE to highlight all that apply.

diff --git a/docs/source/template_options.rst b/docs/source/template_options.rst
@@ -128,9 +128,9 @@ The license type you want to use for this project.
    +------------+----------------------------------------------------+
    | Question   | What versions of Python will your project support? |
    +------------+----------------------------------------------------+
-   | Options    | 3.9 (end-of-life), **✱ 3.10**,                     |
-   |            | **✱ 3.11**, **✱ 3.12**,                            |
-   |            | **✱ 3.13**, 3.14                                   |
+   | Options    | 3.10 (end-of-life), **✱ 3.11**,                    |
+   |            | **✱ 3.12**, **✱ 3.13**,                            |
+   |            | 3.14, 3.15                                         |
    +------------+----------------------------------------------------+
 
 Select all versions of python that you are targeting for execution.

diff --git a/python-project-template/.pre-commit-config.yaml.jinja b/python-project-template/.pre-commit-config.yaml.jinja
@@ -4,7 +4,7 @@ repos:
     # This hook should always pass. It will print a message if the local version 
     # is out of date.
   - repo: https://github.com/lincc-frameworks/pre-commit-hooks
-    rev: v0.2.2
+    rev: 439dda8bd784f4aa721851ecec03877df286f6b5
     hooks:
       - id: check-lincc-frameworks-template-version
         name: Check template version
@@ -23,7 +23,7 @@ repos:
         entry: jupyter nbconvert --clear-output
     # Prevents committing directly branches named 'main' and 'master'.
   - repo: https://github.com/pre-commit/pre-commit-hooks
-    rev: v4.4.0
+    rev: 3e8a8703264a2f4a69428a0aa4dcb512790b2c8c
     hooks:
       - id: no-commit-to-branch
         name: Prevent main branch commits
@@ -34,21 +34,21 @@ repos:
         args: ['--maxkb=500']
     # Verify that pyproject.toml is well formed
   - repo: https://github.com/abravalheri/validate-pyproject
-    rev: v0.24.1
+    rev: 17e12779811926f000bdfa1795f9e3735dd71ac3
     hooks:
       - id: validate-pyproject
         name: Validate pyproject.toml
         description: Verify that pyproject.toml adheres to the established schema.
     # Verify that GitHub workflows are well formed
   - repo: https://github.com/python-jsonschema/check-jsonschema
-    rev: 0.28.0
+    rev: 0494aa7fa1314e98913a41227d8f0a515b2c1049
     hooks:
       - id: check-github-workflows
         args: ["--verbose"]
 {%- if 'isort' in enforce_style %}
     # Automatically sort the imports used in .py files
   - repo: https://github.com/pycqa/isort
-    rev: 5.12.0
+    rev: 9f905615631c545f5aea2516508109350d1d2f7d
     hooks:
       - id: isort
         name: Run isort
@@ -90,7 +90,7 @@ repos:
 {%- if 'black' in enforce_style %}
     # Analyze the code style and report code that doesn't adhere.
   - repo: https://github.com/psf/black
-    rev: 23.7.0
+    rev: 258e7dbf348bc23cb70b8cdf693481c04634ebcc
     hooks:
       - id: black-jupyter
         name: Format code using black
@@ -104,7 +104,7 @@ repos:
 {%- if 'ruff_lint' in enforce_style %}
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: v0.2.1
+    rev: 44b5042edab9382aba712eed4f9c7bab7a3d6a3e
     hooks:
       - id: ruff
         name: Lint code using ruff; sort and organize imports 
@@ -114,7 +114,7 @@ repos:
 {%- if 'ruff_format' in enforce_style %}
   - repo: https://github.com/astral-sh/ruff-pre-commit
     # Ruff version.
-    rev: v0.2.1
+    rev: 44b5042edab9382aba712eed4f9c7bab7a3d6a3e
     hooks:
       - id: ruff-format
         name: Format code using ruff
@@ -123,7 +123,7 @@ repos:
 {%- if mypy_type_checking != 'none' %}
     # Analyze type hints and report errors.
   - repo: https://github.com/pre-commit/mirrors-mypy
-    rev: v1.19.0
+    rev: 2834ec6639549dd6796205c8f011dedcd587288b
     hooks:
       - id: mypy
         name: mypy (python files in src/ and tests/)
@@ -142,7 +142,7 @@ repos:
 {%- endif %}
 {%- if include_docs and include_notebooks %}
   - repo: https://github.com/lincc-frameworks/pre-commit-hooks
-    rev: v0.2.2
+    rev: 439dda8bd784f4aa721851ecec03877df286f6b5
     hooks:
       - id: pre-executed-nb-never-execute
         name: Check pre-executed notebooks

diff --git a/tests/conftest.py b/tests/conftest.py
@@ -2,7 +2,7 @@
 
 import pytest
 
-PYTHON_VERSIONS = ["3.9", "3.10", "3.11", "3.12", "3.13", "3.14"]
+PYTHON_VERSIONS = ["3.10", "3.11", "3.12", "3.13", "3.14", "3.15"]
 
 
 def pytest_addoption(parser):