diff --git a/pyproject.toml b/pyproject.toml
index dff2f2f..67c76df 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "probably"
-version = "3.0.0"
+version = "4.0.0"
 description = ""
 authors = ["Philipp Schröer <mail@philworld.de>"]