diff --git a/include/libvirt/libvirt-domain.h b/include/libvirt/libvirt-domain.h
index 2aec69bc54..1ea3284e63 100644
--- a/include/libvirt/libvirt-domain.h
+++ b/include/libvirt/libvirt-domain.h
@@ -2499,6 +2499,34 @@ int                  virDomainDelIOThread(virDomainPtr domain,
  */
 # define VIR_DOMAIN_IOTHREAD_POLL_SHRINK "poll_shrink"
 
+/**
+ * VIR_DOMAIN_IOTHREAD_THREAD_POOL_MIN:
+ *
+ * Sets the lower bound for thread pool size. A value of -1 disables this bound
+ * leaving hypervisor use its default value, though this value is not accepted
+ * for running domains. Due to internal implementation it's recommended to set
+ * VIR_DOMAIN_IOTHREAD_THREAD_POOL_MIN and VIR_DOMAIN_IOTHREAD_THREAD_POOL_MAX
+ * separately. Accepted type is VIR_TYPED_PARAM_INT.
+ *
+ * Since: 8.5.0
+ */
+# define VIR_DOMAIN_IOTHREAD_THREAD_POOL_MIN "thread_pool_min"
+
+/**
+ * VIR_DOMAIN_IOTHREAD_THREAD_POOL_MAX:
+ *
+ * Sets the upper bound for thread pool size. A value of -1 disables this bound
+ * leaving hypervisor use its default value, though this value is not accepted
+ * for running domains. Since the upper band has to be equal to or greater than
+ * lower bound value of 0 is not accepted. Due to internal implementation it's
+ * recommended to set VIR_DOMAIN_IOTHREAD_THREAD_POOL_MIN and
+ * VIR_DOMAIN_IOTHREAD_THREAD_POOL_MAX separately. Accepted type is
+ * VIR_TYPED_PARAM_INT.
+ *
+ * Since: 8.5.0
+ */
+# define VIR_DOMAIN_IOTHREAD_THREAD_POOL_MAX "thread_pool_max"
+
 int                  virDomainSetIOThreadParams(virDomainPtr domain,
                                                 unsigned int iothread_id,
                                                 virTypedParameterPtr params,