diff --git a/MANIFEST.in b/MANIFEST.in
index 5748b57fe..271628638 100644
--- a/MANIFEST.in
+++ b/MANIFEST.in
@@ -1,5 +1,5 @@
-include LICENSE
 include README.rst
+recursive-include filer *.py
 recursive-include filer/locale *
 recursive-include filer/static *
 recursive-include filer/templates *
diff --git a/pyproject.toml b/pyproject.toml
index 913fc6d6e..64fa99a06 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -57,10 +57,13 @@ heif = ["pillow-heif"]
 Homepage = "https://github.com/django-cms/django-filer"
 
 [tool.setuptools]
-packages = ["filer"]
 include-package-data = true
 zip-safe = false
 
+[tool.setuptools.packages.find]
+where = ["."]
+include = ["filer*"]
+
 [tool.setuptools.dynamic]
 version = {attr = "filer.__version__"}
 
@@ -110,4 +113,4 @@ sections = [
 ]
 known_first_party = ["filer"]
 known_cms = ["cms", "menus"]
-known_django = ["django"]
\ No newline at end of file
+known_django = ["django"]