diff --git a/srcpkgs/opentoonz/patches/Fix-Qt-5.13-build-error.patch b/srcpkgs/opentoonz/patches/Fix-Qt-5.13-build-error.patch
deleted file mode 100644
index 2149b2c3c01..00000000000
--- a/srcpkgs/opentoonz/patches/Fix-Qt-5.13-build-error.patch
+++ /dev/null
@@ -1,21 +0,0 @@
-From adae1528d6f580d56b5499c97b30acfb84af4390 Mon Sep 17 00:00:00 2001
-From: manongjohn <manongjohn@users.noreply.github.com>
-Date: Tue, 9 Jul 2019 23:19:16 -0400
-Subject: [PATCH] Fix Qt 5.13 build error (#2665)
-
----
- toonz/sources/include/tfxattributes.h | 1 +
- 1 file changed, 1 insertion(+)
-
-diff --git a/toonz/sources/include/tfxattributes.h b/toonz/sources/include/tfxattributes.h
-index 224a94426..92245cb8d 100644
---- toonz/sources/include/tfxattributes.h
-+++ toonz/sources/include/tfxattributes.h
-@@ -5,6 +5,7 @@
- 
- #include "tgeometry.h"
- #include <QStack>
-+#include <QList>
- 
- #undef DVAPI
- #undef DVVAR
diff --git a/srcpkgs/opentoonz/patches/QPainterPath.patch b/srcpkgs/opentoonz/patches/QPainterPath.patch
new file mode 100644
index 00000000000..cc9ac227f74
--- /dev/null
+++ b/srcpkgs/opentoonz/patches/QPainterPath.patch
@@ -0,0 +1,35 @@
+From 3ccd50532913049804bd7569fb7f88415cd45ee9 Mon Sep 17 00:00:00 2001
+From: Christophe Giboudeaux <christophe@krop.fr>
+Date: Tue, 9 Jun 2020 09:47:56 +0200
+Subject: [PATCH] Fix build with Qt 5.15.
+
+QPainterPath is no longer included indirectly.
+---
+ toonz/sources/tnztools/toolutils.cpp    | 1 +
+ toonz/sources/toonzqt/functionpanel.cpp | 1 +
+ 2 files changed, 2 insertions(+)
+
+diff --git a/toonz/sources/tnztools/toolutils.cpp b/toonz/sources/tnztools/toolutils.cpp
+index 1ceff93722..db4032f737 100644
+--- toonz/sources/tnztools/toolutils.cpp
++++ toonz/sources/tnztools/toolutils.cpp
+@@ -42,6 +42,7 @@
+ #include "tools/strokeselection.h"
+ 
+ #include <QPainter>
++#include <QPainterPath>
+ #include <QGLWidget>  // for QGLWidget::convertToGLFormat
+ #include <QFont>
+ #include <QFontMetrics>
+diff --git a/toonz/sources/toonzqt/functionpanel.cpp b/toonz/sources/toonzqt/functionpanel.cpp
+index 4cc6612634..b6a0c09239 100644
+--- toonz/sources/toonzqt/functionpanel.cpp
++++ toonz/sources/toonzqt/functionpanel.cpp
+@@ -24,6 +24,7 @@
+ 
+ // Qt includes
+ #include <QPainter>
++#include <QPainterPath>
+ #include <QMouseEvent>
+ #include <QWheelEvent>
+ #include <QMenu>
diff --git a/srcpkgs/opentoonz/patches/musl.patch b/srcpkgs/opentoonz/patches/musl.patch
index 4ad393812b2..3b382d499ab 100644
--- a/srcpkgs/opentoonz/patches/musl.patch
+++ b/srcpkgs/opentoonz/patches/musl.patch
@@ -16,7 +16,7 @@
  
  #ifdef LINUX
 -#include <sys/sysctl.h>
-+#include <linux/sysctl.h>
++#include <unistd.h>
  #endif
  
  // forward declaration
diff --git a/srcpkgs/opentoonz/patches/musl2.patch b/srcpkgs/opentoonz/patches/musl2.patch
new file mode 100644
index 00000000000..fb69095d27f
--- /dev/null
+++ b/srcpkgs/opentoonz/patches/musl2.patch
@@ -0,0 +1,30 @@
+Based on https://github.com/opentoonz/opentoonz/pull/3500
+
+diff --git a/toonz/sources/stdfx/igs_resource_msg_from_err_unix.cpp b/toonz/sources/stdfx/igs_resource_msg_from_err_unix.cpp
+index da51594e..c3a9da17 100644
+--- toonz/sources/stdfx/igs_resource_msg_from_err_unix.cpp
++++ toonz/sources/stdfx/igs_resource_msg_from_err_unix.cpp
+@@ -1,3 +1,5 @@
++#define _POSIX_C_SOURCE 200809L
++#undef _GNU_SOURCE
+ #include <cerrno>
+ #include <cstring> /* memset */
+ #include <vector>
+@@ -120,7 +121,7 @@ HP-UX(v11.23)では、strerror_r()をサポートしない。
+ 注意::strerror()はThread SafeではなくMulti Threadでは正常動作しない
+ */
+     errmsg += ::strerror(erno);
+-#elif ((_POSIX_C_SOURCE >= 200112L || _XOPEN_SOURCE >= 600) && !_GNU_SOURCE)
++#elif !defined(__APPLE__)
+     /*
+ http://japanese-linux-man-pages.coding-school.com/man/X_strerror_r-3
+ より、POSIX.1.2002で規定されたXSI準拠のバージョンのstrerror_r()
+@@ -130,7 +131,7 @@ http://japanese-linux-man-pages.coding-school.com/man/X_strerror_r-3
+     if (0 == ret) {
+       errmsg += buff;
+     } else if (-1 == ret) {
+-      swtich(errno) {
++      switch(errno) {
+       case EINVAL:
+         errmsg +=
+             "strerror_r() gets Error : The value of errnum is not a "
diff --git a/srcpkgs/opentoonz/template b/srcpkgs/opentoonz/template
index 9f3dedd5d8d..cb6fed95dd7 100644
--- a/srcpkgs/opentoonz/template
+++ b/srcpkgs/opentoonz/template
@@ -1,7 +1,7 @@
 # Template file for 'opentoonz'
 pkgname=opentoonz
-version=1.3.0
-revision=2
+version=1.4.0
+revision=1
 build_wrksrc="toonz/sources"
 build_style=cmake
 hostmakedepends="qt5-qmake qt5-host-tools pkg-config automake libtool"
@@ -14,7 +14,7 @@ maintainer="bra1nwave <brainwave@openmailbox.org>"
 license="BSD-3-Clause"
 homepage="https://opentoonz.github.io/e/"
 distfiles="https://github.com/opentoonz/opentoonz/archive/v${version}.tar.gz"
-checksum=a5dd0286a58017a086a3533016b9b4f54ada25a230c62de63b995bc04d0cd5a8
+checksum=176caca191bf2747964ecaf8cbb6be6a738fd04b464a2ba182b5aaf96ccaefa9
 
 pre_configure() {
 	# Upstream uses their own modified version of tiff