diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
index ee131569..b32946cd 100644
--- a/.github/workflows/test.yml
+++ b/.github/workflows/test.yml
@@ -15,15 +15,12 @@ jobs:
 
   tests_matrix:
     runs-on: ubuntu-latest
+    needs: [ ruff ]
     strategy:
       matrix:
         python-version: [3.8, 3.9, "3.10", 3.11, 3.12]
-        django-version: [4.1, 4.2, 5.0, "main"]
+        django-version: [4.2, 5.0, "main"]
         exclude:
-            # Django 4.1
-            - python-version: 3.12
-              django-version: 4.1
-
             # Django 4.2
             - python-version: 3.12
               django-version: 4.2
@@ -64,6 +61,7 @@ jobs:
 
   docs:
     runs-on: ubuntu-latest
+    needs: [ tests_matrix ]
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -71,15 +69,31 @@ jobs:
             python-version: "3.11"
             cache: 'pip'
             cache-dependency-path: docs/requirements.txt
-      - name: Install and build
+      - name: Build documentation
         run: |
           python -m pip install -r docs/requirements.txt
           make docs
 
+  build:
+    runs-on: ubuntu-latest
+    needs: [ tests_matrix ]
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-python@v5
+        with:
+            python-version: "3.11"
+            cache: 'pip'
+            cache-dependency-path: requirements-dev.txt
+      - name: Build package
+        run: |
+          python -m pip install -r requirements-dev.txt
+          make build
+
+
   tests:
     if: always()
     runs-on: ubuntu-latest
-    needs: [ tests_matrix, ruff, docs ]
+    needs: [ tests_matrix, ruff, docs, build ]
     steps:
       - name: Check tests matrix status
         if: needs.tests_matrix.result != 'success'
diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 00000000..748fbcbf
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1,16 @@
+include LICENSE
+include MANIFEST.in
+include *.yaml
+include pyproject.toml
+include *.md
+include *.py
+include *.txt
+include Makefile
+include tox.ini
+include docs/*.rst docs/*.txt docs/*.py docs/Makefile
+graft src
+graft tests
+graft example
+prune docs/_build
+exclude example/db.sqlite3
+global-exclude *.py[cod]
diff --git a/Makefile b/Makefile
index 5fdc9a70..64725355 100644
--- a/Makefile
+++ b/Makefile
@@ -12,11 +12,11 @@ tests:
 .PHONY: reformat
 reformat:
 	ruff format .
-	ruff check . --fix
+	ruff --fix .
 
 .PHONY: lint
 lint:
-	ruff check .
+	ruff .
 
 .PHONY: docs
 docs: clean
@@ -45,12 +45,15 @@ else
 endif
 
 .PHONY: build
-build: docs
+build:
 	python -m build
+	twine check dist/*
+	check-manifest
+	pyroma .
+	check-wheel-contents dist
 
 .PHONY: publish
-publish: porcelain branch build
-	twine check dist/*
+publish: porcelain branch docs build
 	twine upload dist/*
 	git tag -a v${VERSION} -m "Release ${VERSION}"
 	git push origin --tags
diff --git a/pyproject.toml b/pyproject.toml
index 4d19c6f3..74c035d7 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [build-system]
 build-backend = "setuptools.build_meta"
-requires = ["setuptools>=64", "setuptools_scm>=8"]
+requires = ["setuptools>=64"]
 
 [project]
 authors = [
@@ -10,7 +10,6 @@ classifiers = [
   "Development Status :: 5 - Production/Stable",
   "Environment :: Web Environment",
   "Framework :: Django",
-  "Framework :: Django :: 4.1",
   "Framework :: Django :: 4.2",
   "Framework :: Django :: 5.0",
   "Intended Audience :: Developers",
@@ -26,9 +25,10 @@ classifiers = [
   "Topic :: Utilities",
 ]
 dependencies = [
-  "Django>=4.1",
+  "Django>=4.2",
 ]
 description = "Bootstrap 3 for Django"
+keywords = ["django", "bootstrap", "bootstrap3"]
 license = {file = "LICENSE"}
 name = "django-bootstrap3"
 readme = "README.md"
@@ -45,30 +45,32 @@ Source = "https://github.com/zostera/django-bootstrap3"
 [tool.ruff]
 fix = false
 line-length = 120
-lint.fixable = [
+src = ["src"]
+target-version = "py38"
+
+[tool.ruff.lint]
+fixable = [
   "I001", # isort (sorting)
   "F", # flake8
   "D", # docformatter
   "UP", # pyupgrade
 ]
-lint.ignore = [
+ignore = [
   "D1", # D1: Missing docstring error codes (because not every function and class has a docstring)
   "D203", # D203: 1 blank line required before class docstring (conflicts with D211 and should be disabled, see https://github.com/PyCQA/pydocstyle/pull/91)
   "D212", # D212: Multi-line docstring summary should start at the first line
   "D301", # D301: Use r”“” if any backslashes in a docstring (unclear how else to handle backslashes in docstrings)
 ]
-lint.select = [
+select = [
   "D", # pydocstyle
   "E", # pycodestyle
   "F", # flake8
   "I", # isort
   "UP", # pyupgrade
 ]
-lint.unfixable = [
+unfixable = [
   "F8", # names in flake8, such as defined but unused variables
 ]
-src = ["src"]
-target-version = "py38"
 
 [tool.ruff.lint.isort]
 known-first-party = ["bootstrap3", "app"]
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 4b0815ab..25a27c28 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -3,4 +3,6 @@
 twine==5.0.0
 build==1.2.1
 setuptools==69.5.1
-setuptools-scm==8.0.4
+check-manifest==0.49
+pyroma==4.2
+check-wheel-contents==0.6.0
diff --git a/tox.ini b/tox.ini
index d9ae827a..5673c0b8 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,17 +1,16 @@
 [tox]
 args_are_paths = false
 envlist =
-    py38-{4.1,4.2},
-    py39-{4.1,4.2},
-    py310-{4.1,4.2,5.0,main},
-    py311-{4.1,4.2,5.0,main},
+    py38-{4.2},
+    py39-{4.2},
+    py310-{4.2,5.0,main},
+    py311-{4.2,5.0,main},
     py312-{4.2,5.0,main},
     docs,
     lint,
 
 [testenv]
 basepython =
-    py37: python3.7
     py38: python3.8
     py39: python3.9
     py310: python3.10