diff --git a/src/include/liburing.h b/src/include/liburing.h
index 7a8337b..52f2fb8 100644
--- a/src/include/liburing.h
+++ b/src/include/liburing.h
@@ -250,6 +250,7 @@
 int io_uring_buf_ring_head(struct io_uring *ring, int buf_group, uint16_t *head);
 int io_uring_register_sync_cancel(struct io_uring *ring,
 				 struct io_uring_sync_cancel_reg *reg);
+int io_uring_register_sync_msg_ring(struct io_uring_sqe *sqe);
 
 int io_uring_register_file_alloc_range(struct io_uring *ring,
 					unsigned off, unsigned len);
diff --git a/src/include/liburing/io_uring.h b/src/include/liburing/io_uring.h
index 4ac13f7..05e99d9 100644
--- a/src/include/liburing/io_uring.h
+++ b/src/include/liburing/io_uring.h
@@ -612,6 +612,8 @@
 	/* clone registered buffers from source ring to current ring */
 	IORING_REGISTER_CLONE_BUFFERS		= 30,
 
+	IORING_REGISTER_SEND_MSG_RING		= 31,
+
 	/* this goes last */
 	IORING_REGISTER_LAST,
 
diff --git a/src/liburing-ffi.map b/src/liburing-ffi.map
index 66fcef7..f072add 100644
--- a/src/liburing-ffi.map
+++ b/src/liburing-ffi.map
@@ -211,4 +211,5 @@
 		io_uring_submit_and_wait_min_timeout;
 		io_uring_wait_cqes_min_timeout;
 		io_uring_clone_buffers;
+		io_uring_register_sync_msg_ring;
 } LIBURING_2.7;
diff --git a/src/liburing.map b/src/liburing.map
index c13cd36..5d16684 100644
--- a/src/liburing.map
+++ b/src/liburing.map
@@ -102,4 +102,5 @@
 		io_uring_submit_and_wait_min_timeout;
 		io_uring_wait_cqes_min_timeout;
 		io_uring_clone_buffers;
+		io_uring_register_sync_msg_ring;
 } LIBURING_2.7;
diff --git a/src/register.c b/src/register.c
index 4fa2255..3d4ab91 100644
--- a/src/register.c
+++ b/src/register.c
@@ -408,3 +408,8 @@
 
 	return do_register(dst, IORING_REGISTER_CLONE_BUFFERS, &buf, 1);
 }
+
+int io_uring_register_sync_msg_ring(struct io_uring_sqe *sqe)
+{
+	return __sys_io_uring_register(-1, IORING_REGISTER_SEND_MSG_RING, sqe, 1);
+}
diff --git a/test/Makefile b/test/Makefile
index ceabf59..2038976 100644
--- a/test/Makefile
+++ b/test/Makefile
@@ -133,6 +133,7 @@
 	msg-ring-fd.c \
 	msg-ring-flags.c \
 	msg-ring-overflow.c \
+	msg-ring-sync.c \
 	multicqes_drain.c \
 	napi-test.c \
 	no-mmap-inval.c \
diff --git a/test/msg-ring-sync.c b/test/msg-ring-sync.c
new file mode 100644
index 0000000..f09e5d8
--- /dev/null
+++ b/test/msg-ring-sync.c
@@ -0,0 +1,210 @@
+/* SPDX-License-Identifier: MIT */
+/*
+ * Description: test ring messaging command
+ *
+ */
+#include <errno.h>
+#include <stdio.h>
+#include <unistd.h>
+#include <stdlib.h>
+#include <string.h>
+#include <fcntl.h>
+#include <pthread.h>
+
+#include "liburing.h"
+#include "helpers.h"
+
+static int no_msg;
+
+struct data {
+	struct io_uring *ring;
+	unsigned int flags;
+	pthread_barrier_t startup;
+	pthread_barrier_t barrier;
+};
+
+static void *wait_cqe_fn(void *__data)
+{
+	struct data *d = __data;
+	struct io_uring_cqe *cqe;
+	struct io_uring ring;
+	int ret;
+
+	ret = io_uring_queue_init(4, &ring, d->flags);
+	d->ring = &ring;
+	pthread_barrier_wait(&d->startup);
+
+	pthread_barrier_wait(&d->barrier);
+
+	if (ret == -EINVAL)
+		goto skip;
+
+	ret = io_uring_wait_cqe(&ring, &cqe);
+	if (ret) {
+		fprintf(stderr, "wait cqe %d\n", ret);
+		goto err_no_cqe;
+	}
+
+	if (cqe->user_data != 0x5aa5) {
+		fprintf(stderr, "user_data %llx\n", (long long) cqe->user_data);
+		goto err;
+	}
+	if (cqe->res != 0x20) {
+		fprintf(stderr, "len %x\n", cqe->res);
+		goto err;
+	}
+
+	io_uring_cqe_seen(&ring, cqe);
+skip:
+	io_uring_queue_exit(&ring);
+	return NULL;
+err:
+	io_uring_cqe_seen(&ring, cqe);
+err_no_cqe:
+	io_uring_queue_exit(&ring);
+	return (void *) (unsigned long) 1;
+}
+
+static int test_remote(unsigned int ring_flags)
+{
+	struct io_uring *target;
+	pthread_t thread;
+	void *tret;
+	struct io_uring_sqe sqe = { };
+	struct data d;
+	int ret;
+
+	d.flags = ring_flags;
+	pthread_barrier_init(&d.barrier, NULL, 2);
+	pthread_barrier_init(&d.startup, NULL, 2);
+	pthread_create(&thread, NULL, wait_cqe_fn, &d);
+
+	pthread_barrier_wait(&d.startup);
+	target = d.ring;
+
+	io_uring_prep_msg_ring(&sqe, target->ring_fd, 0x20, 0x5aa5, 0);
+	sqe.user_data = 1;
+
+	ret = io_uring_register_sync_msg_ring(&sqe);
+	if (ret == -EINVAL) {
+		no_msg = 1;
+		return T_EXIT_SKIP;
+	}
+	if (ret < 0) {
+		fprintf(stderr, "send_msg_ring_sync %d\n", ret);
+		goto err;
+	}
+
+	pthread_barrier_wait(&d.barrier);
+
+	if (ret != 0) {
+		fprintf(stderr, "res %d\n", ret);
+		return -1;
+	}
+	pthread_join(thread, &tret);
+	return 0;
+err:
+	return 1;
+}
+
+static int test_invalid(void)
+{
+	struct io_uring_sqe sqe = { };
+	int ret;
+
+	io_uring_prep_msg_ring(&sqe, 1, 0, 0x8989, 0);
+	sqe.user_data = 1;
+
+	ret = io_uring_register_sync_msg_ring(&sqe);
+	
+	if (ret != -EBADFD) {
+		fprintf(stderr, "res %d\n", ret);
+		return -1;
+	}
+
+	return 0;
+}
+
+static int test_disabled_ring(int flags)
+{
+	struct io_uring_sqe sqe = { };
+	struct io_uring disabled_ring;
+	int ret;
+
+	flags |= IORING_SETUP_R_DISABLED;
+	ret = io_uring_queue_init(8, &disabled_ring, flags);
+	if (ret) {
+		fprintf(stderr, "ring setup failed: %d\n", ret);
+		return 1;
+	}
+
+	io_uring_prep_msg_ring(&sqe, disabled_ring.ring_fd, 0x10, 0x1234, 0);
+	sqe.user_data = 1;
+
+	ret = io_uring_register_sync_msg_ring(&sqe);
+	if (ret != 0 && ret != -EBADFD) {
+		fprintf(stderr, "res %d\n", ret);
+		return 1;
+	}
+
+	return 0;
+}
+
+static int test(int ring_flags)
+{
+	int ret;
+
+	ret = test_invalid();
+	if (ret) {
+		fprintf(stderr, "test_invalid failed\n");
+		return T_EXIT_FAIL;
+	}
+
+	ret = test_remote(ring_flags);
+	if (ret) {
+		fprintf(stderr, "test_remote failed\n");
+		return T_EXIT_FAIL;
+	}
+
+	ret = test_remote(ring_flags | IORING_SETUP_IOPOLL);
+	if (ret) {
+		fprintf(stderr, "test_remote failed\n");
+		return T_EXIT_FAIL;
+	}
+
+	if (test_disabled_ring(0)) {
+		fprintf(stderr, "test_disabled_ring failed\n");
+		return T_EXIT_FAIL;
+	}
+
+	if (test_disabled_ring(IORING_SETUP_SINGLE_ISSUER | IORING_SETUP_DEFER_TASKRUN)) {
+		fprintf(stderr, "test_disabled_ring defer failed\n");
+		return T_EXIT_FAIL;
+	}
+
+	return 0;
+}
+
+int main(int argc, char *argv[])
+{
+	int ret;
+
+	if (argc > 1)
+		return T_EXIT_SKIP;
+
+	ret = test(0);
+	if (ret != T_EXIT_PASS) {
+		fprintf(stderr, "ring flags 0 failed\n");
+		return ret;
+	}
+	if (no_msg)
+		return T_EXIT_SKIP;
+
+	ret = test(IORING_SETUP_SINGLE_ISSUER|IORING_SETUP_DEFER_TASKRUN);
+	if (ret != T_EXIT_PASS) {
+		fprintf(stderr, "ring flags defer failed\n");
+		return ret;
+	}
+
+	return ret;
+}