diff --git a/mingw-w64-qtcreator/PKGBUILD b/mingw-w64-qtcreator/PKGBUILD
index 324936a693..37f00acb0b 100644
--- a/mingw-w64-qtcreator/PKGBUILD
+++ b/mingw-w64-qtcreator/PKGBUILD
@@ -5,9 +5,9 @@ _realname=qt-creator
 pkgbase=mingw-w64-${_realname}
 pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
 __pre=
-_base_ver=4.2.0
+_base_ver=4.2.1
 pkgver=${_base_ver}${_pre}
-pkgrel=2
+pkgrel=1
 pkgdesc='Cross-platform IDE (mingw-w64)'
 url='https://www.qt.io/'
 install=qt-creator-${CARCH}.install
@@ -39,7 +39,7 @@ source=(#http://download.qt-project.org/development_releases/qtcreator/${_base_v
         qt-creator-3.5.0-Hacky-fix-for-__GNUC_PREREQ-usage.patch
         qt-creator-3.5.1-Use-systemEnvironment-For-Start-and-Debug-External-Application.patch)
 noextract=(${_pkgfqn}.tar.gz)
-sha256sums=('0e05783bbc3a38aa935dd1b17191bcbc2af3cf6f7197865ee089fe094d0cf27b'
+sha256sums=('2537c2fcd127136241d0bf3bf9e1f03cf35be1a24414479d5502a7539ca25a38'
             'b4eba129997fef75b811d0ba3ef573db23ba13e43f9dbdb0c27164ee551ba08d'
             '96c14f54577bf6cadf5c12018745666a9e99cd8d6a876c29a28b13599a8cb368'
             '24f93d9d888027915ce3eb387d2d52123fd625ae1b3cd31adb6500952bc6e192'
@@ -86,7 +86,7 @@ build() {
     _config_variant=release
   fi
   ${MINGW_PREFIX}/bin/qmake.exe ../${_pkgfqn}/qtcreator.pro CONFIG+=${_config_variant}
-  make ${_config_variant}
+  make ${_config_variant} -j1
   make docs
 }
 
diff --git a/mingw-w64-qtcreator/qt-creator-i686.install b/mingw-w64-qtcreator/qt-creator-i686.install
index 2732dc32a9..fa5d88b0b4 100644
--- a/mingw-w64-qtcreator/qt-creator-i686.install
+++ b/mingw-w64-qtcreator/qt-creator-i686.install
@@ -27,7 +27,7 @@ post_install() {
         ./sdktool.exe addTC \
           "--id" "ProjectExplorer.ToolChain.Mingw:M2_MSYS2_x86_64_C" \
           "--language" "1" \
-          "--name" "MSYS2 64bit (MSYS2)" \
+          "--name" "MSYS2 64bit GCC (MSYS2)" \
           "--path" "/usr/bin/gcc.exe" \
           "--abi" "x86-windows-msys-pe-64bit" \
           "--supportedAbis" "x86-windows-msys-pe-64bit"
@@ -35,7 +35,7 @@ post_install() {
         ./sdktool.exe addTC \
           "--id" "ProjectExplorer.ToolChain.Mingw:M2_MSYS2_x86_64_CXX" \
           "--language" "2" \
-          "--name" "MSYS2 64bit (MSYS2)" \
+          "--name" "MSYS2 64bit G++ (MSYS2)" \
           "--path" "/usr/bin/g++.exe" \
           "--abi" "x86-windows-msys-pe-64bit" \
           "--supportedAbis" "x86-windows-msys-pe-64bit"
@@ -47,7 +47,7 @@ post_install() {
         ./sdktool.exe addTC \
           "--id" "ProjectExplorer.ToolChain.Mingw:M2_MSYS2_i686_C" \
           "--language" "1" \
-          "--name" "MSYS2 32bit (MSYS2)" \
+          "--name" "MSYS2 32bit GCC (MSYS2)" \
           "--path" "/usr/bin/gcc.exe" \
           "--abi" "x86-windows-msys-pe-32bit" \
           "--supportedAbis" "x86-windows-msys-pe-32bit"
@@ -55,7 +55,7 @@ post_install() {
         ./sdktool.exe addTC \
           "--id" "ProjectExplorer.ToolChain.Mingw:M2_MSYS2_i686_CXX" \
           "--language" "2" \
-          "--name" "MSYS2 32bit (MSYS2)" \
+          "--name" "MSYS2 32bit G++ (MSYS2)" \
           "--path" "/usr/bin/g++.exe" \
           "--abi" "x86-windows-msys-pe-32bit" \
           "--supportedAbis" "x86-windows-msys-pe-32bit"
@@ -71,7 +71,7 @@ post_install() {
     ./sdktool.exe addTC \
       "--id" "ProjectExplorer.ToolChain.Mingw:M2_MinGW-w64_x86_64_C" \
       "--language" "1" \
-      "--name" "MinGW-w64 64bit (MSYS2)" \
+      "--name" "MinGW-w64 64bit GCC (MSYS2)" \
       "--path" "/mingw64/bin/gcc.exe" \
       "--abi" "x86-windows-msys-pe-64bit" \
       "--supportedAbis" "x86-windows-msys-pe-64bit"
@@ -79,7 +79,7 @@ post_install() {
     ./sdktool.exe addTC \
       "--id" "ProjectExplorer.ToolChain.Mingw:M2_MinGW-w64_x86_64_CXX" \
       "--language" "2" \
-      "--name" "MinGW-w64 64bit (MSYS2)" \
+      "--name" "MinGW-w64 64bit G++ (MSYS2)" \
       "--path" "/mingw64/bin/g++.exe" \
       "--abi" "x86-windows-msys-pe-64bit" \
       "--supportedAbis" "x86-windows-msys-pe-64bit"
@@ -91,7 +91,7 @@ post_install() {
     ./sdktool.exe addTC \
       "--id" "ProjectExplorer.ToolChain.Mingw:M2_MinGW-w64_i686_C" \
       "--language" "1" \
-      "--name" "MinGW-w64 32bit (MSYS2)" \
+      "--name" "MinGW-w64 32bit GCC (MSYS2)" \
       "--path" "/mingw32/bin/gcc.exe" \
       "--abi" "x86-windows-msys-pe-32bit" \
       "--supportedAbis" "x86-windows-msys-pe-32bit"
@@ -99,7 +99,7 @@ post_install() {
     ./sdktool.exe addTC \
       "--id" "ProjectExplorer.ToolChain.Mingw:M2_MinGW-w64_i686_CXX" \
       "--language" "2" \
-      "--name" "MinGW-w64 32bit (MSYS2)" \
+      "--name" "MinGW-w64 32bit G++ (MSYS2)" \
       "--path" "/mingw32/bin/g++.exe" \
       "--abi" "x86-windows-msys-pe-32bit" \
       "--supportedAbis" "x86-windows-msys-pe-32bit"
diff --git a/mingw-w64-qtcreator/qt-creator-x86_64.install b/mingw-w64-qtcreator/qt-creator-x86_64.install
index e1ca5916c0..af401ce08e 100644
--- a/mingw-w64-qtcreator/qt-creator-x86_64.install
+++ b/mingw-w64-qtcreator/qt-creator-x86_64.install
@@ -27,7 +27,7 @@ post_install() {
         ./sdktool.exe addTC \
           "--id" "ProjectExplorer.ToolChain.Mingw:M2_MSYS2_x86_64_C" \
           "--language" "1" \
-          "--name" "MSYS2 64bit (MSYS2)" \
+          "--name" "MSYS2 64bit GCC (MSYS2)" \
           "--path" "/usr/bin/gcc.exe" \
           "--abi" "x86-windows-msys-pe-64bit" \
           "--supportedAbis" "x86-windows-msys-pe-64bit"
@@ -35,7 +35,7 @@ post_install() {
         ./sdktool.exe addTC \
           "--id" "ProjectExplorer.ToolChain.Mingw:M2_MSYS2_x86_64_CXX" \
           "--language" "2" \
-          "--name" "MSYS2 64bit (MSYS2)" \
+          "--name" "MSYS2 64bit G++ (MSYS2)" \
           "--path" "/usr/bin/g++.exe" \
           "--abi" "x86-windows-msys-pe-64bit" \
           "--supportedAbis" "x86-windows-msys-pe-64bit"
@@ -47,7 +47,7 @@ post_install() {
         ./sdktool.exe addTC \
           "--id" "ProjectExplorer.ToolChain.Mingw:M2_MSYS2_i686_C" \
           "--language" "1" \
-          "--name" "MSYS2 32bit (MSYS2)" \
+          "--name" "MSYS2 32bit GCC (MSYS2)" \
           "--path" "/usr/bin/gcc.exe" \
           "--abi" "x86-windows-msys-pe-32bit" \
           "--supportedAbis" "x86-windows-msys-pe-32bit"
@@ -55,7 +55,7 @@ post_install() {
         ./sdktool.exe addTC \
           "--id" "ProjectExplorer.ToolChain.Mingw:M2_MSYS2_i686_CXX" \
           "--language" "2" \
-          "--name" "MSYS2 32bit (MSYS2)" \
+          "--name" "MSYS2 32bit G++ (MSYS2)" \
           "--path" "/usr/bin/g++.exe" \
           "--abi" "x86-windows-msys-pe-32bit" \
           "--supportedAbis" "x86-windows-msys-pe-32bit"
@@ -71,7 +71,7 @@ post_install() {
     ./sdktool.exe addTC \
       "--id" "ProjectExplorer.ToolChain.Mingw:M2_MinGW-w64_x86_64_C" \
       "--language" "1" \
-      "--name" "MinGW-w64 64bit (MSYS2)" \
+      "--name" "MinGW-w64 64bit GCC (MSYS2)" \
       "--path" "/mingw64/bin/gcc.exe" \
       "--abi" "x86-windows-msys-pe-64bit" \
       "--supportedAbis" "x86-windows-msys-pe-64bit"
@@ -79,7 +79,7 @@ post_install() {
     ./sdktool.exe addTC \
       "--id" "ProjectExplorer.ToolChain.Mingw:M2_MinGW-w64_x86_64_CXX" \
       "--language" "2" \
-      "--name" "MinGW-w64 64bit (MSYS2)" \
+      "--name" "MinGW-w64 64bit G++ (MSYS2)" \
       "--path" "/mingw64/bin/g++.exe" \
       "--abi" "x86-windows-msys-pe-64bit" \
       "--supportedAbis" "x86-windows-msys-pe-64bit"
@@ -91,7 +91,7 @@ post_install() {
     ./sdktool.exe addTC \
       "--id" "ProjectExplorer.ToolChain.Mingw:M2_MinGW-w64_i686_C" \
       "--language" "1" \
-      "--name" "MinGW-w64 32bit (MSYS2)" \
+      "--name" "MinGW-w64 32bit GCC (MSYS2)" \
       "--path" "/mingw32/bin/gcc.exe" \
       "--abi" "x86-windows-msys-pe-32bit" \
       "--supportedAbis" "x86-windows-msys-pe-32bit"
@@ -99,7 +99,7 @@ post_install() {
     ./sdktool.exe addTC \
       "--id" "ProjectExplorer.ToolChain.Mingw:M2_MinGW-w64_i686_CXX" \
       "--language" "2" \
-      "--name" "MinGW-w64 32bit (MSYS2)" \
+      "--name" "MinGW-w64 32bit G++ (MSYS2)" \
       "--path" "/mingw32/bin/g++.exe" \
       "--abi" "x86-windows-msys-pe-32bit" \
       "--supportedAbis" "x86-windows-msys-pe-32bit"