diff --git a/spin/cmds/build.py b/spin/cmds/build.py
index 56b8766..7933570 100644
--- a/spin/cmds/build.py
+++ b/spin/cmds/build.py
@@ -4,6 +4,12 @@
 
 
 @click.command()
-def sdist():
-    """📦 Build a source distribution in `dist/`"""
-    run(["pyproject-build", ".", "--sdist"])
+@click.argument("pyproject-build-args", metavar="", nargs=-1)
+def sdist(pyproject_build_args):
+    """📦 Build a source distribution in `dist/`
+
+    Extra arguments are passed to `pyproject-build`, e.g.
+
+      spin sdist -- -x -n
+    """
+    run(["pyproject-build", ".", "--sdist"] + list(pyproject_build_args))