From 68175492bf69e475d427e4d0cded74046a58103e Mon Sep 17 00:00:00 2001
From: Dan Fiedler <danfiedler@microsoft.com>
Date: Fri, 21 Aug 2026 15:22:31 -0400
Subject: [PATCH 1/3] Pin GitHub Actions to full-length commit SHAs

---
 .github/dependabot.yml     | 11 +++++++++++
 .github/workflows/test.yml | 12 ++++++------
 2 files changed, 17 insertions(+), 6 deletions(-)
 create mode 100644 .github/dependabot.yml

diff --git a/.github/dependabot.yml b/.github/dependabot.yml
new file mode 100644
index 00000000..2c48305b
--- /dev/null
+++ b/.github/dependabot.yml
@@ -0,0 +1,11 @@
+version: 2
+updates:
+  - package-ecosystem: "github-actions"
+    directory: "/"
+    groups:
+      github-actions:
+        patterns: ["*"]
+    schedule:
+      interval: "weekly"
+    cooldown:
+      default-days: 7
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index 1169d839..9e0e9bb2 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -17,15 +17,15 @@ jobs:
 
     steps:
       - name: Check out code
-        uses: actions/checkout@v2
+        uses: actions/checkout@0717577d45739eb3c851188b29f50ed6c0b2194e # v2.8.0
 
       - name: Setup Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v2
+        uses: actions/setup-python@e9aba2c848f5ebd159c070c61ea2c4e2b122355e # v2.3.4
         with:
           python-version: ${{ matrix.python-version }}
 
       - name: Cache pip
-        uses: actions/cache@v4
+        uses: actions/cache@0057852bfaa89a56745cba8c7296529d2fc39830 # v4.3.0
         with:
           path: ~/.cache/pip
           key: ${{ runner.os }}-pip-${{ hashFiles('**/pyproject.toml') }}
@@ -36,7 +36,7 @@ jobs:
         run: python -m pip install --group tests
 
       - name: Run pyright tests
-        uses: jakebailey/pyright-action@v2
+        uses: jakebailey/pyright-action@6cabc0f01c4994be48fd45cd9dbacdd6e1ee6e5e # v2.3.3
         with:
           pylance-version: latest-prerelease
           python-version: ${{ matrix.python-version }}
@@ -53,9 +53,9 @@ jobs:
 
     steps:
       - name: Check out code
-        uses: actions/checkout@v2
+        uses: actions/checkout@0717577d45739eb3c851188b29f50ed6c0b2194e # v2.8.0
 
       - name: Run Ruff Linter
-        uses: astral-sh/ruff-action@v3
+        uses: astral-sh/ruff-action@4919ec5cf1f49eff0871dbcea0da843445b837e6 # v3.6.1
       - name: Run Ruff Formatter
         run: ruff format --check

From 83af1f84c9159e312a954b68b51fe2ea3d99c87b Mon Sep 17 00:00:00 2001
From: Rich Chiodo false <rchiodo@microsoft.com>
Date: Tue, 27 Oct 2026 13:29:25 -0700
Subject: [PATCH 2/3] Remove unused noqa causing action-pinning PR hygiene
 failure

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Copilot-Session: ee5422c8-7d8e-4ef8-a050-de857f5b799a
---
 stubs/matplotlib/pyplot.pyi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stubs/matplotlib/pyplot.pyi b/stubs/matplotlib/pyplot.pyi
index 0370b6d0..faf873ae 100644
--- a/stubs/matplotlib/pyplot.pyi
+++ b/stubs/matplotlib/pyplot.pyi
@@ -779,7 +779,7 @@ def tick_params(axis: Literal["x", "y", "both"] = ..., **kwargs): ...
 def ticklabel_format(
     *,
     axis: Literal["x", "y", "both"] = ...,
-    style: Literal["sci", "scientific", "plain"] = ...,  # noqa: F811
+    style: Literal["sci", "scientific", "plain"] = ...,
     scilimits=...,
     useOffset: bool | float = ...,
     useLocale: bool = ...,

From e30be886a0c7bd59e00383b5f53e436f33dda42c Mon Sep 17 00:00:00 2001
From: Rich Chiodo false <rchiodo@microsoft.com>
Date: Tue, 27 Oct 2026 13:33:59 -0700
Subject: [PATCH 3/3] Import ComplexWarning from its supported NumPy location

Match sklearn runtime and the existing utils.fixes stub, fixing Python 3.13 Pyright validation with current NumPy.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Copilot-Session: ee5422c8-7d8e-4ef8-a050-de857f5b799a
---
 stubs/sklearn/utils/validation.pyi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/stubs/sklearn/utils/validation.pyi b/stubs/sklearn/utils/validation.pyi
index d00a6101..08408024 100644
--- a/stubs/sklearn/utils/validation.pyi
+++ b/stubs/sklearn/utils/validation.pyi
@@ -13,7 +13,7 @@ import numpy as np
 import scipy.sparse as sp
 from joblib.memory import Memory
 from numpy import ndarray
-from numpy.core.numeric import ComplexWarning as ComplexWarning
+from numpy.exceptions import ComplexWarning as ComplexWarning
 from numpy.random.mtrand import RandomState
 from pandas import DataFrame
 from scipy.sparse import spmatrix