diff --git a/aider/__init__.py b/aider/__init__.py
index 63af88769..364e7baed 100644
--- a/aider/__init__.py
+++ b/aider/__init__.py
@@ -1 +1 @@
-__version__ = "0.6.3"
+__version__ = "0.6.4"
diff --git a/setup.py b/setup.py
index d1085ca2a..cd9dfddbd 100644
--- a/setup.py
+++ b/setup.py
@@ -1,3 +1,5 @@
+import re
+
 from setuptools import find_packages, setup
 
 with open("requirements.txt") as f: