diff --git a/srcpkgs/cura-engine/patches/0001-Remove-default-none-so-that-it-compiles-in-gcc9.patch b/srcpkgs/cura-engine/patches/0001-Remove-default-none-so-that-it-compiles-in-gcc9.patch
new file mode 100644
index 0000000000..ce7d6a2a41
--- /dev/null
+++ b/srcpkgs/cura-engine/patches/0001-Remove-default-none-so-that-it-compiles-in-gcc9.patch
@@ -0,0 +1,57 @@
+From 45cab061494467165ba515055a828cdd39567c0e Mon Sep 17 00:00:00 2001
+From: Jasper Chan <jasperchan515@gmail.com>
+Date: Mon, 5 Aug 2019 23:37:35 -0700
+Subject: [PATCH] Remove default(none) so that it compiles in gcc9
+
+---
+ src/layerPart.cpp | 2 +-
+ src/support.cpp   | 6 +++---
+ 2 files changed, 4 insertions(+), 4 deletions(-)
+
+diff --git src/layerPart.cpp src/layerPart.cpp
+index ba3e7157..d36a31f6 100644
+--- src/layerPart.cpp
++++ src/layerPart.cpp
+@@ -52,7 +52,7 @@ void createLayerParts(SliceMeshStorage& mesh, Slicer* slicer)
+ {
+     const auto total_layers = slicer->layers.size();
+     assert(mesh.layers.size() == total_layers);
+-#pragma omp parallel for default(none) shared(mesh, slicer) schedule(dynamic)
++#pragma omp parallel for shared(mesh, slicer) schedule(dynamic)
+     // Use a signed type for the loop counter so MSVC compiles (because it uses OpenMP 2.0, an old version).
+     for (int layer_nr = 0; layer_nr < static_cast<int>(total_layers); layer_nr++)
+     {
+diff --git src/support.cpp src/support.cpp
+index 9bd531a6..0a43de2f 100644
+--- src/support.cpp
++++ src/support.cpp
+@@ -816,7 +816,7 @@ void AreaSupport::generateOverhangAreasForMesh(SliceDataStorage& storage, SliceM
+     }
+ 
+     //Generate the actual areas and store them in the mesh.
+-    #pragma omp parallel for default(none) shared(storage, mesh) schedule(dynamic)
++    #pragma omp parallel for shared(storage, mesh) schedule(dynamic)
+     // Use a signed type for the loop counter so MSVC compiles (because it uses OpenMP 2.0, an old version).
+     for (int layer_idx = 1; layer_idx < static_cast<int>(storage.print_layer_count); layer_idx++)
+     {
+@@ -875,7 +875,7 @@ void AreaSupport::generateSupportAreasForMesh(SliceDataStorage& storage, const S
+     constexpr bool no_prime_tower = false;
+     xy_disallowed_per_layer[0] = storage.getLayerOutlines(0, no_support, no_prime_tower).offset(xy_distance);
+     // for all other layers (of non support meshes) compute the overhang area and possibly use that when calculating the support disallowed area
+-    #pragma omp parallel for default(none) shared(xy_disallowed_per_layer, storage, mesh) schedule(dynamic)
++    #pragma omp parallel for shared(xy_disallowed_per_layer, storage, mesh) schedule(dynamic)
+     // Use a signed type for the loop counter so MSVC compiles (because it uses OpenMP 2.0, an old version).
+     for (int layer_idx = 1; layer_idx < static_cast<int>(layer_count); layer_idx++)
+     {
+@@ -1070,7 +1070,7 @@ void AreaSupport::generateSupportAreasForMesh(SliceDataStorage& storage, const S
+         const int max_checking_layer_idx = std::max(0,
+                                                     std::min(static_cast<int>(storage.support.supportLayers.size()),
+                                                              static_cast<int>(layer_count - (layer_z_distance_top - 1))));
+-#pragma omp parallel for default(none) shared(support_areas, storage) schedule(dynamic)
++#pragma omp parallel for shared(support_areas, storage) schedule(dynamic)
+         // Use a signed type for the loop counter so MSVC compiles (because it uses OpenMP 2.0, an old version).
+         for (int layer_idx = 0; layer_idx < max_checking_layer_idx; layer_idx++)
+         {
+-- 
+2.22.0
+
diff --git a/srcpkgs/cura-engine/template b/srcpkgs/cura-engine/template
index a3d26dc949..63b00cda8e 100644
--- a/srcpkgs/cura-engine/template
+++ b/srcpkgs/cura-engine/template
@@ -1,6 +1,6 @@
 # Template file for 'cura-engine'
 pkgname=cura-engine
-version=4.0.0
+version=4.2.0
 revision=1
 wrksrc="CuraEngine-${version}"
 build_style=cmake
@@ -12,7 +12,7 @@ maintainer="Karl Nilsson <karl.robert.nilsson@gmail.com>"
 license="AGPL-3.0-or-later"
 homepage="https://github.com/Ultimaker/CuraEngine"
 distfiles="https://github.com/Ultimaker/CuraEngine/archive/${version}.tar.gz"
-checksum=08c8cc6ca6ba44ce35cf66b06e399408dd5fc809a208afc1892f0f700728326e
+checksum=9e66c2840c46ad5ba91da872d73cc8d8d03bf163fe8ce9a81ec5188a6d7b4593
 
 post_install() {
 	vlicense LICENSE