diff --git a/setup.py b/setup.py
index 1890a8125..6b922cfd1 100644
--- a/setup.py
+++ b/setup.py
@@ -5,7 +5,7 @@ with open("requirements.txt") as f:
 
 setup(
     name="aider",
-    version="0.3.0",
+    version="0.4.0",
     packages=find_packages(),
     install_requires=requirements,
     entry_points={