diff --git a/pyproject.toml b/pyproject.toml
index 8f18aad9..e1008e8d 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "testcontainers"
-version = "4.1.0"  # auto-incremented by release-please
+version = "4.0.1"  # auto-incremented by release-please
 description = "Python library for throwaway instances of anything that can run in a Docker container"
 authors = ["Sergey Pirogov <automationremarks@gmail.com>"]
 maintainers = [