diff --git a/.github/workflows/release.yml b/.github/workflows/release.yml
index 67ca048e..9fa1b5e2 100644
--- a/.github/workflows/release.yml
+++ b/.github/workflows/release.yml
@@ -27,7 +27,7 @@ jobs:
           mkdir -p test-sdist
           cd test-sdist
           python -m venv venv-sdist
-          venv-sdist/bin/python -m pip install ../dist/CausalPy*.tar.gz
+          venv-sdist/bin/python -m pip install ../dist/causalpy*.tar.gz
           echo "Checking import and version number (on release)"
           venv-sdist/bin/python -c "import causalpy; assert causalpy.__version__ == '${{  github.ref_name }}' if '${{ github.ref_type }}' == 'tag' else causalpy.__version__; print(causalpy.__version__)"
           cd ..
@@ -36,7 +36,7 @@ jobs:
           mkdir -p test-bdist
           cd test-bdist
           python -m venv venv-bdist
-          venv-bdist/bin/python -m pip install ../dist/CausalPy*.whl
+          venv-bdist/bin/python -m pip install ../dist/causalpy*.whl
           echo "Checking import and version number (on release)"
           venv-bdist/bin/python -c "import causalpy; assert causalpy.__version__ == '${{  github.ref_name }}' if '${{ github.ref_type }}' == 'tag' else causalpy.__version__; print(causalpy.__version__)"
           cd ..
diff --git a/pyproject.toml b/pyproject.toml
index 5800f58f..aeb6f960 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,19 +1,22 @@
 [build-system]
 # Minimum requirements for the build system to execute.
-build-backend = "setuptools.build_meta"
-requires = ["setuptools>=61.0"]
+build-backend = "flit_core.buildapi"
+requires = ["flit_core>=3.4,<4"]
 
-# This is configuration specific to the `setuptools` build backend.
+# This is configuration specific to the `flit` build backend.
 # If you are using a different build backend, you will need to change this.
-[tool.setuptools.packages.find]
-exclude = ["causalpy.test*", "docs*"]
+[tool.flit.sdist]
+exclude = ["causalpy/test*", "docs/*", "dist/*"]
 
-[tool.setuptools.package-data]
-"causalpy.data" = ["*.csv"]
+[tool.flit.external-data]
+directory = "causalpy/data"
+
+[tool.flit.module]
+name="causalpy"
 
 [project]
 name = "CausalPy"
-version = "0.1.0"
+dynamic = ["version"]
 description = "Causal inference for quasi-experiments in Python"
 readme = "README.md"
 license = { file = "LICENSE" }