diff --git a/.gitignore b/.gitignore
index c2c7f2f..3d7d3c1 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,3 @@
 env
-result
\ No newline at end of file
+result
+*/__pycache__
\ No newline at end of file
diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..14240ed
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1,2 @@
+graft dlibrary/templates
+graft dlibrary/static
diff --git a/dlibrary/__init__.py b/dlibrary/__init__.py
new file mode 100644
index 0000000..a4d7d64
--- /dev/null
+++ b/dlibrary/__init__.py
@@ -0,0 +1 @@
+from .dlibrary import *
diff --git a/dlibrary.py b/dlibrary/dlibrary.py
similarity index 96%
rename from dlibrary.py
rename to dlibrary/dlibrary.py
index ac039d2..261c3fa 100755
--- a/dlibrary.py
+++ b/dlibrary/dlibrary.py
@@ -2,6 +2,7 @@
 
 import argparse
 import asyncio
+import importlib_resources as resources
 from pathlib import Path
 from os.path import relpath, splitext
 import re
@@ -12,7 +13,7 @@ import zipfile
 
 from dlsite_async import DlsiteAPI
 import fitz
-from jinja2 import Environment, FileSystemLoader, select_autoescape
+from jinja2 import Environment, PackageLoader, select_autoescape
 import requests
 
 NUMBER_REGEX = re.compile('[0-9]+')
@@ -295,11 +296,14 @@ def metadata(args):
 
     con.close()
 
-def publish(args):
-    source_dir = Path(__file__).parent
+def copy_contents(src, dest):
+    dest.mkdir(parents=True, exist_ok=True)
+    for item in src.iterdir():
+        shutil.copyfile(item, dest / item.name)
 
+def publish(args):
     jenv = Environment(
-        loader=FileSystemLoader(source_dir / "templates"),
+        loader=PackageLoader("dlibrary"),
         autoescape=select_autoescape()
     )
 
@@ -336,7 +340,8 @@ def publish(args):
         with open(work_dir / 'index.html', 'w') as f:
             f.write(viewer_template.render(depth=2, work=work, title=title, images=images))
 
-    shutil.copytree(source_dir / 'static', args.destdir / 'site' / 'static', dirs_exist_ok=True)
+    with resources.as_file(resources.files("dlibrary")) as r:
+        copy_contents(r / 'static', args.destdir / 'site' / 'static')
 
     list_template = jenv.get_template("list.html")
 
@@ -405,6 +410,9 @@ parser_metadata.set_defaults(func=metadata)
 parser_publish = subparsers.add_parser('publish', help='generate HTML/CSS/JS for library site')
 parser_publish.set_defaults(func=publish)
 
-if __name__ == "__main__":
+def main():
     args = argparser.parse_args()
     args.func(args)
+
+if __name__ == "__main__":
+    main()
diff --git a/static/dlibrary.css b/dlibrary/static/dlibrary.css
similarity index 100%
rename from static/dlibrary.css
rename to dlibrary/static/dlibrary.css
diff --git a/static/viewer.css b/dlibrary/static/viewer.css
similarity index 100%
rename from static/viewer.css
rename to dlibrary/static/viewer.css
diff --git a/static/viewer.js b/dlibrary/static/viewer.js
similarity index 100%
rename from static/viewer.js
rename to dlibrary/static/viewer.js
diff --git a/templates/base.html b/dlibrary/templates/base.html
similarity index 100%
rename from templates/base.html
rename to dlibrary/templates/base.html
diff --git a/templates/list.html b/dlibrary/templates/list.html
similarity index 100%
rename from templates/list.html
rename to dlibrary/templates/list.html
diff --git a/templates/utils.html b/dlibrary/templates/utils.html
similarity index 100%
rename from templates/utils.html
rename to dlibrary/templates/utils.html
diff --git a/templates/viewer.html b/dlibrary/templates/viewer.html
similarity index 100%
rename from templates/viewer.html
rename to dlibrary/templates/viewer.html
diff --git a/flake.nix b/flake.nix
index 8ec9a08..63d5f48 100644
--- a/flake.nix
+++ b/flake.nix
@@ -48,11 +48,14 @@
       dlibrary = buildPythonApplication {
         pname = "dlibrary";
         version = "0.1";
+        pyproject = true;
         propagatedBuildInputs = [
           pymupdf
           requests
           dlsite-async
           jinja2
+          importlib-resources
+          setuptools
         ];
         src = ./.;
       };
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 0000000..9f2b3a6
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,17 @@
+[project]
+name = "dlibrary"
+version = "0.1"
+dependencies = [
+    "requests",
+    "PyMuPDF",
+    "dlsite-async",
+    "jinja2",
+    "importlib_resources",
+]
+
+[project.scripts]
+dlibrary = "dlibrary:main"
+
+[build-system]
+requires = ["setuptools"]
+build-backend = "setuptools.build_meta"
\ No newline at end of file
diff --git a/requirements.txt b/requirements.txt
deleted file mode 100644
index 75ceaf5..0000000
--- a/requirements.txt
+++ /dev/null
@@ -1,4 +0,0 @@
-requests
-PyMuPDF
-dlsite-async
-jinja2
diff --git a/setup.py b/setup.py
deleted file mode 100644
index 05267ef..0000000
--- a/setup.py
+++ /dev/null
@@ -1,9 +0,0 @@
-#!/usr/bin/env python
-
-from setuptools import setup, find_packages
-
-setup(name='dlibrary',
-      version='0.1',
-      packages=find_packages(),
-      scripts=["dlibrary.py"],
-      )