diff --git a/setup.py b/setup.py
index 71931df..8303760 100644
--- a/setup.py
+++ b/setup.py
@@ -136,7 +136,7 @@ def build_extension(self, ext):
 if 'PROJECT_NAME' in os.environ:
     project_name = os.environ['PROJECT_NAME']
 setup(name = project_name,
-      version = '0.4.23',
+      version = '0.4.24',
       description = 'Differentiable rendering without approximation.',
       long_description = """redner is a differentiable renderer that can take the
                             derivatives of rendering output with respect to arbitrary