diff --git a/amqtt/__init__.py b/amqtt/__init__.py
index 9564083..e0d16fb 100644
--- a/amqtt/__init__.py
+++ b/amqtt/__init__.py
@@ -1,3 +1,3 @@
 # See the file license.txt for copying permission.
 
-__version__ = "0.10.0-alpha.3"
+__version__ = "0.10.0-alpha.4"
diff --git a/pyproject.toml b/pyproject.toml
index 2ce9f93..244b661 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "amqtt"
-version = "0.10.0-alpha.3"
+version = "0.10.0-alpha.4"
 description = "MQTT client/broker using Python asyncio"
 authors = ["aMQTT Contributers"]
 license = "MIT"