diff --git a/.github/workflows/checks.yml b/.github/workflows/checks.yml
index 8f415fd5..5f793dc8 100644
--- a/.github/workflows/checks.yml
+++ b/.github/workflows/checks.yml
@@ -40,8 +40,9 @@ jobs:
           # annotations referencing optional dependencies.
           - python-version: '3.10'
             options: 'none'
-          # Lower-bounds of all dependencies and Python version.
-          - python-version: '3.10.0'
+          # Lower-bounds of all dependencies and Python version. Not 3.10.0 because of a dataclass
+          # bug (bpo-44649) breaking pytest>=9.2.0, nor 3.10.1 because uv doesn't provide it.
+          - python-version: '3.10.2'
             extra_groups: 'lower_bounds'
           # Latest: torch nightly build.
           - torch_channel: 'nightly'
diff --git a/pyproject.toml b/pyproject.toml
index 340ad041..49eb5a9a 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -134,6 +134,7 @@ full = [
 
 [tool.pytest.ini_options]
 xfail_strict = true
+addopts = "-p no:dash"  # dash's pytest plugin uses deprecated hook marks, failing with -W error
 
 [tool.coverage.report]
 exclude_lines = [