diff --git a/avalanche/__init__.py b/avalanche/__init__.py
index 1a68fc6df..e97ecf8cb 100644
--- a/avalanche/__init__.py
+++ b/avalanche/__init__.py
@@ -5,7 +5,7 @@
 from avalanche import training
 
 
-__version__ = "0.6.0"
+__version__ = "0.6.0a"
 
 _dataset_add = None  # type: ignore