diff --git a/pyproject.toml b/pyproject.toml
index 518bfffcd..0593078fe 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -36,6 +36,9 @@ dev = [
 [project.optional-dependencies]
 grpc = ["pyln-testing"]
 
+[tool.poetry]
+package-mode = false
+
 [tool.uv]
 package = false