diff --git a/vizitig/__init__.py b/vizitig/__init__.py
index 7799631e64ff23800974a1cc18974c5ae6756e86..8902742a9de64a8bc09a49d4829df5a3661535ad 100644
--- a/vizitig/__init__.py
+++ b/vizitig/__init__.py
@@ -4,5 +4,5 @@ if sys.version_info.major < 3:
     raise ValueError("Incompatible with Python2")
 
 
-version = "0.5"
-compatible_versions = ("0.4", "0.5")
+version = "1"
+compatible_versions = ("0.4", "0.5", "1")