diff --git a/pyproject.toml b/pyproject.toml
index 2242d424a..785c00eff 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -59,7 +59,11 @@ Source = "https://github.com/encode/uvicorn"
 path = "uvicorn/__init__.py"
 
 [tool.hatch.build.targets.sdist]
-include = ["/uvicorn"]
+include = [
+    "/uvicorn",
+    "/tests",
+    "/requirements.txt",
+]
 
 [tool.ruff]
 line-length = 120