diff --git a/MANIFEST.in b/MANIFEST.in
new file mode 100644
index 0000000..1eeef06
--- /dev/null
+++ b/MANIFEST.in
@@ -0,0 +1 @@
+prune tests
diff --git a/pyproject.toml b/pyproject.toml
index e5d173a..a44f7d3 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -63,7 +63,7 @@ dashboard = [
 version = {attr = "ituna.__version__"}
 
 [tool.setuptools.packages.find]
-exclude = ["third_party*"]
+exclude = ["third_party*", "tests*"]
 
 [project.urls]
 Homepage = "https://github.com/dynamical-inference/ituna"