diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/completion_queue.pyx.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/completion_queue.pyx.pxi
index cb5fad9ebf6..5eb5f087067 100644
--- a/src/python/grpcio/grpc/_cython/_cygrpc/completion_queue.pyx.pxi
+++ b/src/python/grpcio/grpc/_cython/_cygrpc/completion_queue.pyx.pxi
@@ -73,6 +73,7 @@ cdef class CompletionQueue:
       c_attrs.version = 1
       c_attrs.cq_completion_type = GRPC_CQ_NEXT
       c_attrs.cq_polling_type = GRPC_CQ_NON_LISTENING
+      c_attrs.cq_shutdown_cb = NULL
       self.c_completion_queue = grpc_completion_queue_create(
           grpc_completion_queue_factory_lookup(&c_attrs), &c_attrs, NULL);
     else:
diff --git a/src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi b/src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi
index 139a6def3ed..684e0a3e399 100644
--- a/src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi
+++ b/src/python/grpcio/grpc/_cython/_cygrpc/grpc.pxi
@@ -236,6 +236,7 @@ cdef extern from "grpc/grpc.h":
     int version
     grpc_cq_completion_type cq_completion_type
     grpc_cq_polling_type cq_polling_type
+    void* cq_shutdown_cb
 
   ctypedef enum grpc_connectivity_state:
     GRPC_CHANNEL_IDLE