diff --git a/tests/base.py b/tests/base.py
index <HASH>..<HASH> 100644
--- a/tests/base.py
+++ b/tests/base.py
@@ -15,13 +15,14 @@ class PrioCORO:
     prio = priority.CORO

     

 priorities = (PrioCORO, PrioOP, PrioFIRST, PrioLAST)

-from cogen.core.proactors import has_iocp, \

+from cogen.core.proactors import has_iocp, has_ctypes_iocp, \

                                 has_kqueue, has_stdlib_kqueue, \

                                 has_epoll, has_stdlib_epoll, \

                                 has_poll, has_select

 proactors_available = [

     j for j in [

         i() for i in (

+            has_ctypes_iocp,

             has_iocp,

             has_stdlib_kqueue,             

             has_kqueue,
added ctypes iocp to tests