diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..ead7aba
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1 @@
+include yafi/ui/*.ui
diff --git a/pyproject.toml b/pyproject.toml
index 8aa1dd2..ae33340 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -29,3 +29,7 @@ Issues = "https://github.com/Steve-Tech/YAFI/issues"
 
 [project.gui-scripts]
 yafi = "yafi:main"
+
+[build-system]
+requires = ["setuptools>=61.0"]
+build-backend = "setuptools.build_meta"
diff --git a/yafi/__init__.py b/yafi/__init__.py
new file mode 100644
index 0000000..017ec0c
--- /dev/null
+++ b/yafi/__init__.py
@@ -0,0 +1 @@
+from .yafi import main