diff --git a/thirdparty/README.md b/thirdparty/README.md
index 8f8d212a82b..1c17e2e38da 100644
--- a/thirdparty/README.md
+++ b/thirdparty/README.md
@@ -309,7 +309,7 @@ File extracted from upstream release tarball (`-apache.tgz` variant):
 ## miniupnpc
 
 - Upstream: https://github.com/miniupnp/miniupnp/tree/master/miniupnpc
-- Version: git (0ab1d67, 2019)
+- Version: git (4436632, 2020)
 - License: BSD-3-Clause
 
 Files extracted from upstream source:
diff --git a/thirdparty/miniupnpc/miniupnpc/minissdpc.c b/thirdparty/miniupnpc/miniupnpc/minissdpc.c
index ea9af02e1fe..36244dedecc 100644
--- a/thirdparty/miniupnpc/miniupnpc/minissdpc.c
+++ b/thirdparty/miniupnpc/miniupnpc/minissdpc.c
@@ -62,13 +62,13 @@ struct sockaddr_un {
 
 #include "miniupnpc_socketdef.h"
 
-#if !defined(__DragonFly__) && !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__APPLE__) && !defined(_WIN32) && !defined(__CYGWIN__) && !defined(__sun) && !defined(__GNU__) && !defined(__FreeBSD_kernel__)
+#if !defined(__DragonFly__) && !defined(__OpenBSD__) && !defined(__NetBSD__) && !defined(__APPLE__) && !defined(_WIN32) && !defined(__CYGWIN__) && !defined(__sun) && !defined(__GNU__) && !defined(__FreeBSD_kernel__) && !defined(__HAIKU__)
 #define HAS_IP_MREQN
 #endif
 
 #if !defined(HAS_IP_MREQN) && !defined(_WIN32)
 #include <sys/ioctl.h>
-#if defined(__sun)
+#if defined(__sun) || defined(__HAIKU__)
 #include <sys/sockio.h>
 #endif
 #endif
diff --git a/thirdparty/miniupnpc/miniupnpc/portlistingparse.c b/thirdparty/miniupnpc/miniupnpc/portlistingparse.c
index 55859f2714f..18d967b8779 100644
--- a/thirdparty/miniupnpc/miniupnpc/portlistingparse.c
+++ b/thirdparty/miniupnpc/miniupnpc/portlistingparse.c
@@ -1,7 +1,7 @@
 /* $Id: portlistingparse.c,v 1.9 2015/07/15 12:41:13 nanard Exp $ */
 /* MiniUPnP project
  * http://miniupnp.free.fr/ or http://miniupnp.tuxfamily.org/
- * (c) 2011-2016 Thomas Bernard
+ * (c) 2011-2020 Thomas Bernard
  * This software is subject to the conditions detailed
  * in the LICENCE file provided within the distribution */
 #include <string.h>
@@ -12,6 +12,11 @@
 #include "portlistingparse.h"
 #include "minixml.h"
 
+#if defined(__HAIKU__)
+/* rename our private function because Haiku already defines a atoui() function */
+#define atoui atoui2
+#endif
+
 /* list of the elements */
 static const struct {
 	const portMappingElt code;
diff --git a/thirdparty/miniupnpc/miniupnpc/upnpc.c b/thirdparty/miniupnpc/miniupnpc/upnpc.c
index 4325658bee8..cb7f18b5f63 100644
--- a/thirdparty/miniupnpc/miniupnpc/upnpc.c
+++ b/thirdparty/miniupnpc/miniupnpc/upnpc.c
@@ -1,7 +1,7 @@
 /* $Id: upnpc.c,v 1.119 2018/03/13 23:34:46 nanard Exp $ */
 /* Project : miniupnp
  * Author : Thomas Bernard
- * Copyright (c) 2005-2019 Thomas Bernard
+ * Copyright (c) 2005-2020 Thomas Bernard
  * This software is subject to the conditions detailed in the
  * LICENCE file provided in this distribution. */
 
@@ -580,7 +580,7 @@ int main(int argc, char ** argv)
 	}
 #endif
     printf("upnpc : miniupnpc library test client, version %s.\n", MINIUPNPC_VERSION_STRING);
-	printf(" (c) 2005-2019 Thomas Bernard.\n");
+	printf(" (c) 2005-2020 Thomas Bernard.\n");
     printf("Go to http://miniupnp.free.fr/ or https://miniupnp.tuxfamily.org/\n"
 	       "for more information.\n");
 	/* command line processing */