diff --git a/README.rst b/README.rst
index ebe6931a1d..df602209bb 100644
--- a/README.rst
+++ b/README.rst
@@ -38,3 +38,17 @@ Now you can write things like::
 
     f = λ a: a('hello')
     f(print)
+
+Add to pyenv
+------------
+
+In this repo there's a build file to use with `pyenv <https://github.com/pyenv/pyenv>`_.
+
+Copy the build version with::
+
+    cp ./λython ${PYENV_ROOT}/plugins/python-build/share/python-build
+    pyenv install λython
+
+Then I'm confident you'll want to use this version as your global version::
+
+    pyenv global λython
diff --git a/Tools/requirements-dev.txt b/Tools/requirements-dev.txt
index e5badaccad..f5ad0bb8fd 100644
--- a/Tools/requirements-dev.txt
+++ b/Tools/requirements-dev.txt
@@ -4,4 +4,4 @@ mypy==1.13
 
 # needed for peg_generator:
 types-psutil==6.0.0.20240901
-types-setuptools==74.0.0.20240831
+types-setuptools==75.6.0.20241126
diff --git "a/\316\273ython" "b/\316\273ython"
new file mode 100644
index 0000000000..20d4c8ad91
--- /dev/null
+++ "b/\316\273ython"
@@ -0,0 +1,7 @@
+prefer_openssl3
+export PYTHON_BUILD_CONFIGURE_WITH_OPENSSL=1
+export PYTHON_BUILD_TCLTK_USE_PKGCONFIG=1
+export PYTHON_BUILD_CONFIGURE_WITH_DSYMUTIL=1
+install_package "openssl-3.3.0" "https://www.openssl.org/source/openssl-3.3.0.tar.gz#53e66b043322a606abf0087e7699a0e033a37fa13feb9742df35c3a33b18fb02" mac_openssl --if has_broken_mac_openssl
+install_package "readline-8.0" "https://ftpmirror.gnu.org/readline/readline-8.0.tar.gz#e339f51971478d369f8a053a330a190781acb9864cf4c541060f12078948e461" mac_readline --if has_broken_mac_readline
+install_git "Python-3.13-dev" "https://github.com/Bocchio/-ython" main standard verify_py313 copy_python_gdb ensurepip