diff --git a/mypy b/mypy
deleted file mode 160000
index 4310586..0000000
--- a/mypy
+++ /dev/null
@@ -1 +0,0 @@
-Subproject commit 4310586460e0af07fa8994a0b4f03cb323e352f0
diff --git a/mypy/test-requirements.in b/mypy/test-requirements.in
new file mode 100644
index 0000000..405981d
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+++ b/mypy/test-requirements.in
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+# If you change this file (or mypy-requirements.txt or build-requirements.txt), please run:
+# pip-compile --output-file=test-requirements.txt --strip-extras --allow-unsafe test-requirements.in
+
+-r mypy-requirements.txt
+-r build-requirements.txt
+attrs>=18.0
+black==24.3.0  # must match version in .pre-commit-config.yaml
+filelock>=3.3.0
+# lxml 4.9.3 switched to manylinux_2_28, the wheel builder still uses manylinux2014
+lxml>=4.9.1,<4.9.3; (python_version<'3.11' or sys_platform!='win32') and python_version<'3.12'
+pre-commit
+pre-commit-hooks==4.6.0
+psutil>=4.0
+pytest>=8.1.0
+pytest-xdist>=1.34.0
+pytest-cov>=2.10.0
+ruff==0.2.0  # must match version in .pre-commit-config.yaml
+setuptools>=65.5.1
+tomli>=1.1.0  # needed even on py311+ so the self check passes with --python-version 3.8
diff --git a/mypy/test-requirements.txt b/mypy/test-requirements.txt
new file mode 100644
index 0000000..3e9a739
--- /dev/null
+++ b/mypy/test-requirements.txt
@@ -0,0 +1,87 @@
+#
+# This file is autogenerated by pip-compile with Python 3.11
+# by the following command:
+#
+#    pip-compile --allow-unsafe --output-file=test-requirements.txt --strip-extras test-requirements.in
+#
+attrs==23.1.0
+    # via -r mypy/test-requirements.in
+black==24.3.0
+    # via -r mypy/test-requirements.in
+cfgv==3.4.0
+    # via pre-commit
+click==8.1.7
+    # via black
+coverage==7.3.2
+    # via pytest-cov
+distlib==0.3.7
+    # via virtualenv
+execnet==2.0.2
+    # via pytest-xdist
+filelock==3.12.4
+    # via
+    #   -r mypy/test-requirements.in
+    #   virtualenv
+identify==2.5.30
+    # via pre-commit
+iniconfig==2.0.0
+    # via pytest
+lxml==4.9.2 ; (python_version < "3.11" or sys_platform != "win32") and python_version < "3.12"
+    # via -r mypy/test-requirements.in
+mypy-extensions==1.0.0
+    # via
+    #   -r mypy/mypy-requirements.txt
+    #   black
+nodeenv==1.8.0
+    # via pre-commit
+packaging==23.2
+    # via
+    #   black
+    #   pytest
+pathspec==0.11.2
+    # via black
+platformdirs==3.11.0
+    # via
+    #   black
+    #   virtualenv
+pluggy==1.4.0
+    # via pytest
+pre-commit==3.5.0
+    # via -r mypy/test-requirements.in
+pre-commit-hooks==4.6.0
+    # via -r mypy/test-requirements.in
+psutil==5.9.6
+    # via -r mypy/test-requirements.in
+pytest==8.1.1
+    # via
+    #   -r mypy/test-requirements.in
+    #   pytest-cov
+    #   pytest-xdist
+pytest-cov==4.1.0
+    # via -r mypy/test-requirements.in
+pytest-xdist==3.3.1
+    # via -r mypy/test-requirements.in
+pyyaml==6.0.1
+    # via pre-commit
+ruamel-yaml==0.17.40
+    # via pre-commit-hooks
+ruamel-yaml-clib==0.2.8
+    # via ruamel-yaml
+ruff==0.2.0
+    # via -r mypy/test-requirements.in
+tomli==2.0.1
+    # via -r mypy/test-requirements.in
+types-psutil==5.9.5.17
+    # via -r mypy/build-requirements.txt
+types-setuptools==68.2.0.0
+    # via -r mypy/build-requirements.txt
+typing-extensions==4.8.0
+    # via -r mypy/mypy-requirements.txt
+virtualenv==20.24.5
+    # via pre-commit
+
+# The following packages are considered to be unsafe in a requirements file:
+setuptools==68.2.2
+    # via
+    #   -r mypy/test-requirements.in
+    #   nodeenv