diff --git a/pyproject.toml b/pyproject.toml
index dce4dcb..b138294 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -5,7 +5,7 @@ requires = ["setuptools>=61.0"]
 [project]
 name = "integrationtest"
 description = "A framework for pytest-based integration tests of DUNE-DAQ software"
-version = "3.6.0"
+version = "4.0.0"
 readme = "docs/README.md"
 requires-python = ">=3.6"
 dependencies = [