diff --git a/setup.py b/setup.py
index 3c55878..1b4ab34 100644
--- a/setup.py
+++ b/setup.py
@@ -6,7 +6,7 @@
 
 setup(name='sbol_factory',
       description='Ontology-driven data modeling',
-      version='1.0a2',
+      version='1.0a3',
       install_requires=[
             'sbol3==1.0a8',
             'rdflib>=5.0.0',