diff --git a/setup.py b/setup.py
index 7b9df3fb..0ccc2376 100644
--- a/setup.py
+++ b/setup.py
@@ -154,6 +154,7 @@ params.update({
                  'pysnmp.hlapi',
                  'pysnmp.hlapi.v1arch',
                  'pysnmp.hlapi.v1arch.asyncore',
+                 'pysnmp.hlapi.v1arch.asyncore.sync',
                  'pysnmp.hlapi.v3arch',
                  'pysnmp.hlapi.v3arch.asyncio',
                  'pysnmp.hlapi.v3arch.asyncore',