diff --git a/.github/workflows/tests.yml b/.github/workflows/tests.yml
index fc18d065..48c2c059 100644
--- a/.github/workflows/tests.yml
+++ b/.github/workflows/tests.yml
@@ -87,7 +87,7 @@ jobs:
 
       - name: Install NumPy pre-release
         if: matrix.python-version == '3.13'
-        run: uv pip install --system numpy  --extra-index-url https://pypi.anaconda.org/scientific-python-nightly-wheels/simple --prerelease=allow
+        run: uv pip install --system "numpy>=2.1.0rc1"
 
       - name: Install python tools
         run: uv pip install --system -r dev-requirements.txt pytest-github-actions-annotate-failures
@@ -105,22 +105,24 @@ jobs:
         run: python -m pytest -ra
 
   build_wheels:
-    name: ${{ matrix.build }}
+    name: ${{ matrix.only }}
     runs-on: ${{ matrix.os }}
     strategy:
       fail-fast: false
       matrix:
         include:
           - os: ubuntu-latest
-            build: cp313-manylinux_x86_64
+            only: cp313t-manylinux_x86_64
+          - os: ubuntu-latest
+            only: cp313-manylinux_x86_64
           - os: windows-2019
-            build: cp38-win32
+            only: cp38-win32
           - os: windows-2019
-            build: cp37-win_amd64
+            only: cp37-win_amd64
           - os: macos-13
-            build: cp39-macosx_x86_64
+            only: cp39-macosx_x86_64
           - os: macos-14
-            build: cp39-macosx_arm64
+            only: cp39-macosx_arm64
 
     steps:
       - uses: actions/checkout@v4
@@ -131,8 +133,9 @@ jobs:
       - uses: yezz123/setup-uv@v4
 
       - uses: pypa/cibuildwheel@v2.20
+        with:
+          only: "${{ matrix.only }}"
         env:
-          CIBW_BUILD: "${{ matrix.build }}"
           CIBW_BUILD_VERBOSITY: 1
 
       - uses: actions/upload-artifact@v4
diff --git a/.gitignore b/.gitignore
index 887f921c..a96024e5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -87,3 +87,5 @@ compile_commands.json
 
 # Nox
 .nox/*
+/*venv*
+/build
diff --git a/CMakeLists.txt b/CMakeLists.txt
index cc27945e..bb1b832a 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -45,7 +45,7 @@ set(Python_ARTIFACTS_INTERACTIVE TRUE)
 FetchContent_Declare(
   pybind11
   GIT_REPOSITORY https://github.com/pybind/pybind11.git
-  GIT_TAG 3e9dfa2866941655c56877882565e7577de6fc7b # v2.12.0
+  GIT_TAG bd67643652d3800837f1f41549a2a5adbaa3fafe # v2.13.3
   FIND_PACKAGE_ARGS NAMES pybind11)
 FetchContent_MakeAvailable(pybind11)
 
diff --git a/pyproject.toml b/pyproject.toml
index 277e6a33..eaff9138 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,5 +1,5 @@
 [build-system]
-requires = ["scikit-build-core>=0.10", "pybind11>=2.12"]
+requires = ["scikit-build-core>=0.10", "pybind11>=2.13.3"]
 build-backend = "scikit_build_core.build"
 
 [project]
@@ -116,7 +116,7 @@ sdist.exclude = [
 [[tool.scikit-build.generate]]
 path = "boost_histogram/version.py"
 template = '''
-__version__ = version = '$version'
+__version__ = version = "$version"
 '''
 
 
@@ -164,31 +164,27 @@ ignore_missing_imports = true
 build-frontend = "build[uv]"
 test-extras = "test"
 test-command = "pytest --benchmark-disable {project}/tests"
-test-skip = [
-  "pp310-*",
-  "*universal2:arm64",
-  "cp*-*musllinux*",  # segfault
-  "cp313*linux_aarch64", # No NumPy available yet
-]
 skip = [
-  "pp37-*",
-  "pp38-*",
+  "pp3[78]-*",
+  "cp313t-*win*"
 ]
-environment-pass = ["SETUPTOOLS_SCM_PRETEND_VERSION", "PIP_EXTRA_INDEX_URL"]
+test-skip = [
+  "cp*-musllinux_*", # Segfaults
+  "pp310-macosx_arm64", # No binary (numpy 2.1.0 rc 1)
+]
+free-threaded-support = true
+environment-pass = ["SETUPTOOLS_SCM_PRETEND_VERSION"]
 environment.PIP_ONLY_BINARY = "numpy"
 environment.PIP_PREFER_BINARY = "1"
 
 [[tool.cibuildwheel.overrides]]
 select = "*pyodide*"
 inherit.environment = "append"
-environment.CFLAGS = "-fexceptions"
-environment.LDFLAGS = "-fexceptions"
 build-frontend = {name = "build", args = ["--exports", "whole_archive"]}
 
 [[tool.cibuildwheel.overrides]]
-select = "cp313*"
-inherit.environment = "append"
-before-test = "uv pip install --index-url=https://pypi.anaconda.org/scientific-python-nightly-wheels/simple --prerelease=allow numpy"
+select = ["cp313*", "pp310*"]
+before-test = 'uv pip install --only-binary=:all: "numpy>=2.1.0rc1"'
 
 
 [tool.pylint]
diff --git a/src/module.cpp b/src/module.cpp
index 075f4b6a..7a6bbe20 100644
--- a/src/module.cpp
+++ b/src/module.cpp
@@ -12,7 +12,7 @@ void register_histograms(py::module&);
 void register_accumulators(py::module&);
 void register_transforms(py::module&);
 
-PYBIND11_MODULE(_core, m) {
+PYBIND11_MODULE(_core, m, py::mod_gil_not_used()) {
     py::module storage = m.def_submodule("storage");
     register_storages(storage);