diff --git a/pyproject.toml b/pyproject.toml
index aa995cf147d..d10ac58c95c 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -82,6 +82,29 @@ sphinx-autogen = "sphinx.ext.autosummary.generate:main"
 requires = ["flit_core >=3.9,<4"]
 build-backend = "flit_core.buildapi"
 
+[tool.flit.module]
+name = "sphinx"
+
+[tool.flit.sdist]
+include = [
+    "LICENSE.rst",
+    "AUTHORS.rst",
+    "CHANGES.rst",
+    # Documentation
+    "doc/",
+    "CODE_OF_CONDUCT.rst",  # used as an include in the Documentation
+    "EXAMPLES.rst",  # used as an include in the Documentation
+    # Tests
+    "tests/",
+    "tox.ini",
+    # Utilities
+    "utils/",
+    "babel.cfg",
+]
+exclude = [
+    "doc/_build",
+]
+
 [tool.uv]
 dev-dependencies = [
     # docs
diff --git a/uv.lock b/uv.lock
index 829815ebf4e..976823a9f44 100644
--- a/uv.lock
+++ b/uv.lock
@@ -482,7 +482,7 @@ wheels = [
 
 [[package]]
 name = "sphinx"
-version = "0.0.0"
+version = "8.1.0"
 source = { editable = "." }
 dependencies = [
     { name = "alabaster" },
@@ -530,7 +530,7 @@ requires-dist = [
     { name = "alabaster", specifier = ">=0.7.14" },
     { name = "babel", specifier = ">=2.13" },
     { name = "colorama", marker = "sys_platform == 'win32'", specifier = ">=0.4.6" },
-    { name = "docutils", specifier = "<0.22,>=0.20" },
+    { name = "docutils", specifier = ">=0.20,<0.22" },
     { name = "imagesize", specifier = ">=1.3" },
     { name = "jinja2", specifier = ">=3.1" },
     { name = "packaging", specifier = ">=23.0" },