diff --git a/.github/workflows/readme.yml b/.github/workflows/readme.yml
index d3c1b08..8d43535 100644
--- a/.github/workflows/readme.yml
+++ b/.github/workflows/readme.yml
@@ -15,9 +15,9 @@ jobs:
         python-version: ['3.10']
         os: [ubuntu-latest]
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v4
     - name: Set up Python ${{ matrix.python-version }}
-      uses: actions/setup-python@v2
+      uses: actions/setup-python@v5
       with:
         python-version: ${{ matrix.python-version }}
     - name: Install package and dependencies
diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..cdebd58
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1,13 @@
+include AUTHORS.rst
+include CONTRIBUTING.rst
+include HISTORY.md
+include LICENSE
+include README.md
+
+recursive-include sigllm *.json
+
+recursive-include tests *
+recursive-exclude * __pycache__
+recursive-exclude * *.py[co]
+
+recursive-include docs *.md *.rst conf.py Makefile make.bat *.jpg *.png *.gif
diff --git a/pyproject.toml b/pyproject.toml
index ef2c13a..0a2cf5b 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -85,8 +85,9 @@ dev = [
 [project.urls]
 homepage = 'https://github.com/sintel-dev/sigllm/'
 
-[project.entry-points]
-mlblocks = { primitives = 'sigllm:MLBLOCKS_PRIMITIVES', pipelines = 'sigllm:MLBLOCKS_PIPELINES' }
+[project.entry-points.mlblocks]
+pipelines = 'sigllm:MLBLOCKS_PIPELINES'
+primitives = 'sigllm:MLBLOCKS_PRIMITIVES'
 
 [build-system]
 requires = ['setuptools', 'wheel']
@@ -101,7 +102,7 @@ include = ['sigllm', 'sigllm.*']
 namespaces = false
 
 [tool.setuptools.package-data]
-"*" = ["*.*"]
+'*' = ['*.*']
 
 [tool.setuptools.exclude-package-data]
 '*' = [