diff --git a/maubot/__meta__.py b/maubot/__meta__.py
index fb8c51a..466098a 100644
--- a/maubot/__meta__.py
+++ b/maubot/__meta__.py
@@ -1 +1 @@
-__version__ = "0.1.0.dev8"
+__version__ = "0.1.0.dev9"
diff --git a/setup.py b/setup.py
index 7f92fa0..e34d099 100644
--- a/setup.py
+++ b/setup.py
@@ -21,7 +21,7 @@ setuptools.setup(
     packages=setuptools.find_packages(),
 
     install_requires=[
-        "mautrix>=0.4,<0.5",
+        "mautrix>=0.4.dev1,<0.5",
         "aiohttp>=3.0.1,<4",
         "SQLAlchemy>=1.2.3,<2",
         "alembic>=1.0.0,<2",