diff --git a/src/unix/core.c b/src/unix/core.c
index bee641cb4..ef82ee27b 100644
--- a/src/unix/core.c
+++ b/src/unix/core.c
@@ -58,13 +58,19 @@
 
 #if defined(__DragonFly__)      || \
     defined(__FreeBSD__)        || \
-    defined(__FreeBSD_kernel__)
+    defined(__FreeBSD_kernel__) || \
+    defined(__NetBSD__)
 # include <sys/sysctl.h>
 # include <sys/filio.h>
 # include <sys/wait.h>
 # define UV__O_CLOEXEC O_CLOEXEC
 # if defined(__FreeBSD__) && __FreeBSD__ >= 10
 #  define uv__accept4 accept4
+# endif
+# if defined(__NetBSD__)
+#  define uv__accept4(a, b, c, d) paccept((a), (b), (c), NULL, (d))
+# endif
+# if (defined(__FreeBSD__) && __FreeBSD__ >= 10) || defined(__NetBSD__)
 #  define UV__SOCK_NONBLOCK SOCK_NONBLOCK
 #  define UV__SOCK_CLOEXEC  SOCK_CLOEXEC
 # endif
@@ -462,7 +468,9 @@ int uv__accept(int sockfd) {
   assert(sockfd >= 0);
 
   while (1) {
-#if defined(__linux__) || (defined(__FreeBSD__) && __FreeBSD__ >= 10)
+#if defined(__linux__)                          || \
+    (defined(__FreeBSD__) && __FreeBSD__ >= 10) || \
+    defined(__NetBSD__)
     static int no_accept4;
 
     if (no_accept4)
@@ -988,7 +996,7 @@ int uv__open_cloexec(const char* path, int flags) {
 
 int uv__dup2_cloexec(int oldfd, int newfd) {
   int r;
-#if defined(__FreeBSD__) && __FreeBSD__ >= 10
+#if (defined(__FreeBSD__) && __FreeBSD__ >= 10) || defined(__NetBSD__)
   r = dup3(oldfd, newfd, O_CLOEXEC);
   if (r == -1)
     return -errno;