diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index 72eda084..0f8dde3e 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -16,7 +16,7 @@ jobs:
       with:
         fetch-depth: 0
     - name: setup Python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v7
       with:
         python-version: "3.14"
     - run: python -m pip install tox
diff --git a/.github/workflows/docs.yml b/.github/workflows/docs.yml
index 5a9ef11c..21d337a8 100644
--- a/.github/workflows/docs.yml
+++ b/.github/workflows/docs.yml
@@ -17,7 +17,7 @@ jobs:
         with:
           fetch-depth: 0
       - name: setup Python
-        uses: actions/setup-python@v6
+        uses: actions/setup-python@v7
         with:
           python-version: "3.14"
       - name: install dependencies
diff --git a/.github/workflows/lint.yml b/.github/workflows/lint.yml
index 60eddc72..8e7b763c 100644
--- a/.github/workflows/lint.yml
+++ b/.github/workflows/lint.yml
@@ -11,7 +11,7 @@ jobs:
     steps:
     - uses: actions/checkout@v7
     - name: Set up Python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v7
       with:
         python-version: "3.14"
     - run: python -m pip install tox
diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 282bb04f..64d484ec 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -20,7 +20,7 @@ jobs:
       with:
         fetch-depth: 0
     - name: setup Python
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v7
       with:
         python-version: "3.14"
     - run: python -m pip install tox
diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index 50936bc4..3be2e71e 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -26,7 +26,7 @@ jobs:
       with:
         fetch-depth: 0
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v7
       with:
         python-version: ${{ matrix.python-version }}
     - name: activate MSVC (for torch.compile)
@@ -55,7 +55,7 @@ jobs:
       with:
         fetch-depth: 0
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v6
+      uses: actions/setup-python@v7
       with:
         python-version: ${{ matrix.python-version }}
     - name: activate MSVC (for torch.compile / inductor codegen)
diff --git a/pyproject.toml b/pyproject.toml
index 85b8378c..984fb907 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -107,10 +107,11 @@ line-length = 88
 
 [tool.ruff.lint]
 # See https://docs.astral.sh/ruff/rules for additional details
-extend-select = [
+select = [
     "B",  # Pyflakes checks (e.g., unused imports, undefined variables)
     "D",  # PEP 257 docstring conventions (e.g., formatting, consistency)
     "E",  # Pycodestyle errors (e.g., indentation, whitespace, syntax)
+    "F",  # Pyflakes (e.g., unused imports, undefined names)
     "UP",  # PyUpgrade rules (e.g., upgrading to modern Python syntax)
     "I",  # Import conventions (e.g., sorting imports, duplicate imports)
     "SIM",  # Simplification suggestions (e.g., refactoring redundant code)
diff --git a/src/torchpme/lib/mesh_interpolator.py b/src/torchpme/lib/mesh_interpolator.py
index da53ae6e..0f6e6e40 100644
--- a/src/torchpme/lib/mesh_interpolator.py
+++ b/src/torchpme/lib/mesh_interpolator.py
@@ -1,6 +1,14 @@
 import torch
 
 
+# Runs eagerly: Inductor's CPU backend spuriously raises ZeroDivisionError on
+# vectorized `%` with an odd-length divisor (here always 3), see
+# https://github.com/pytorch/pytorch/issues/143649
+@torch.compiler.disable
+def _mesh_index_remainder(indices: torch.Tensor, ns_mesh: torch.Tensor) -> torch.Tensor:
+    return indices % ns_mesh
+
+
 class MeshInterpolator(torch.nn.Module):
     """
     Class for handling all steps related to interpolations in the context of a mesh
@@ -349,7 +357,7 @@ def compute_weights(self, positions: torch.Tensor):
         # below.
         indices_to_interpolate = torch.stack(
             [
-                (positions_rel_idx + i) % self.ns_mesh
+                _mesh_index_remainder(positions_rel_idx + i, self.ns_mesh)
                 for i in range(
                     1 - (self.interpolation_nodes + 1) // 2,
                     1 + self.interpolation_nodes // 2,
diff --git a/tox.ini b/tox.ini
index 31e65772..9e37ea82 100644
--- a/tox.ini
+++ b/tox.ini
@@ -21,8 +21,7 @@ deps =
     twine
 allowlist_externals = bash
 commands_pre =
-    bash -c "if [ -e {toxinidir}/dist/*tar.gz ]; then unlink {toxinidir}/dist/*.whl; fi"
-    bash -c "if [ -e {toxinidir}/dist/*tar.gz ]; then unlink {toxinidir}/dist/*.tar.gz; fi"
+    bash -c "rm -f {toxinidir}/dist/*.whl {toxinidir}/dist/*.tar.gz"
 commands =
     python -m build
     twine check dist/*.tar.gz dist/*.whl