diff --git a/pyproject.toml b/pyproject.toml
index 4d5034f..9014a8d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -40,8 +40,7 @@ isort = "<5"
 [[tool.poetry.source]]
 name = "gnuviech"
 url = "https://pypi.gnuviech-server.de/simple"
-default = false
-secondary = false
+priority = "explicit"
 
 
 [build-system]