diff --git a/grid5000/__version__.py b/grid5000/__version__.py
index 493f7415d73d5d2a0875222a1c7296000935cccc..aae2183d57e1b79794093c075503536340fda960 100644
--- a/grid5000/__version__.py
+++ b/grid5000/__version__.py
@@ -1 +1 @@
-__version__ = "0.3.0"
+__version__ = "1.0.0.alpha-1"