diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index 166abe5b..90a97d67 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -39,9 +39,6 @@ jobs:
         python-version: ${{ matrix.python-version}}
         architecture: x64
 
-    - name : Install Cython 3.0.0
-      run: pip install cython
-
     - name: Install DarSIA
       run: pip install .[dev]
 
diff --git a/pyproject.toml b/pyproject.toml
new file mode 100644
index 00000000..6987c038
--- /dev/null
+++ b/pyproject.toml
@@ -0,0 +1,7 @@
+[build-system]
+requires = [
+  "cython >= 3",
+  "numpy",
+  "setuptools",
+]
+build-backend = "setuptools.build_meta"