diff --git a/Project.toml b/Project.toml
index c82db28..85b26a4 100644
--- a/Project.toml
+++ b/Project.toml
@@ -1,7 +1,7 @@
 name = "XAIBase"
 uuid = "9b48221d-a747-4c1b-9860-46a1d8ba24a7"
 authors = ["Adrian Hill <gh@adrianhill.de>"]
-version = "4.0.0-DEV"
+version = "4.0.0"
 
 [compat]
 julia = "1.6"