diff --git a/.github/workflows/_run-ci.yml b/.github/workflows/_run-ci.yml
index 7312af87..e3e45255 100644
--- a/.github/workflows/_run-ci.yml
+++ b/.github/workflows/_run-ci.yml
@@ -202,8 +202,8 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          # 3.10 matches miles-D's setup.py / pyproject (python_requires=">=3.10").
-          python-version: '3.10'
+          # 3.12 matches the CI/dev container image and miles-D's setup.py.
+          python-version: '3.12'
 
       - name: Install uv
         uses: astral-sh/setup-uv@v5
diff --git a/.github/workflows/pre-commit.yml b/.github/workflows/pre-commit.yml
index d0e05b27..dc09b3c7 100644
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
@@ -22,7 +22,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: '3.10'
+          python-version: '3.12'
           cache: 'pip'
 
       - name: Install pre-commit
diff --git a/pyproject.toml b/pyproject.toml
index b0f7628e..0009454e 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -10,7 +10,7 @@ build-backend = "setuptools.build_meta"
 profile = "black"  # black-compatible
 line_length = 119  # should match black parameters
 ignore_whitespace = true  # ignore whitespace for compatibility with the initial style
-py_version = 310  # python 3.10 as a target version
+py_version = 312  # python 3.12 as a target version
 sections = ["FUTURE", "STDLIB", "THIRDPARTY", "FIRSTPARTY", "LOCALFOLDER"]
 default_section = "THIRDPARTY"
 extend_skip = ["setup.py", "docs/source/conf.py"]
diff --git a/setup.py b/setup.py
index 8c079432..c319590e 100644
--- a/setup.py
+++ b/setup.py
@@ -41,10 +41,8 @@ def get_tag(self):
             "torch>=2.0",
         ]
     },
-    python_requires=">=3.10",
+    python_requires=">=3.12",
     classifiers=[
-        "Programming Language :: Python :: 3.10",
-        "Programming Language :: Python :: 3.11",
         "Programming Language :: Python :: 3.12",
         "Environment :: GPU :: NVIDIA CUDA",
         "Topic :: Scientific/Engineering :: Artificial Intelligence",
diff --git a/tests/fast/dashboard/test_async_collector.py b/tests/fast/dashboard/test_async_collector.py
index c136a9da..369816fa 100644
--- a/tests/fast/dashboard/test_async_collector.py
+++ b/tests/fast/dashboard/test_async_collector.py
@@ -1,3 +1,7 @@
+from tests.ci.ci_register import register_cpu_ci
+
+register_cpu_ci(est_time=15, suite="stage-a-cpu", labels=[])
+
 import logging
 import sys
 import types
@@ -80,7 +84,6 @@ def remote(self, config):
     monkeypatch.setitem(sys.modules, "ray", ray_module)
     monkeypatch.setitem(sys.modules, "ray.util.scheduling_strategies", strategies_module)
     monkeypatch.setattr(backend, "_handle", None)
-    monkeypatch.setattr(backend, "_is_primary", False)
 
     args = SimpleNamespace(
         use_miles_dashboard=True,
diff --git a/tests/fast/utils/test_diffusion_rollout_response.py b/tests/fast/utils/test_diffusion_rollout_response.py
index 908431f8..6f07aad4 100644
--- a/tests/fast/utils/test_diffusion_rollout_response.py
+++ b/tests/fast/utils/test_diffusion_rollout_response.py
@@ -1,3 +1,7 @@
+from tests.ci.ci_register import register_cpu_ci
+
+register_cpu_ci(est_time=15, suite="stage-a-cpu", labels=[])
+
 import pytest
 import torch
 
diff --git a/tests/fast/utils/test_processing_utils.py b/tests/fast/utils/test_processing_utils.py
index b1eab5a7..d695cdf4 100644
--- a/tests/fast/utils/test_processing_utils.py
+++ b/tests/fast/utils/test_processing_utils.py
@@ -1,3 +1,7 @@
+from tests.ci.ci_register import register_cpu_ci
+
+register_cpu_ci(est_time=15, suite="stage-a-cpu", labels=[])
+
 import pytest
 import torch