diff --git a/extra/chromium/PKGBUILD b/extra/chromium/PKGBUILD
index 5a50385a9..b900b1fd4 100644
--- a/extra/chromium/PKGBUILD
+++ b/extra/chromium/PKGBUILD
@@ -14,8 +14,8 @@ highmem=1
 
 pkgname=chromium
 pkgver=65.0.3325.181
-pkgrel=3
-_launcher_ver=5
+pkgrel=4
+_launcher_ver=6
 pkgdesc="A web browser built for speed, simplicity, and security"
 arch=('i686' 'x86_64' 'armv7h' 'aarch64')
 url="https://www.chromium.org/Home"
@@ -23,7 +23,7 @@ license=('BSD')
 depends=('gtk3' 'nss' 'alsa-lib' 'xdg-utils' 'libxss' 'libcups' 'libgcrypt'
          'ttf-font' 'systemd' 'dbus' 'libpulse' 'pciutils' 'json-glib'
          'desktop-file-utils' 'hicolor-icon-theme')
-makedepends=('python2' 'gperf' 'yasm' 'mesa' 'ninja' 'nodejs' 'git')
+makedepends=('python' 'python2' 'gperf' 'yasm' 'mesa' 'ninja' 'nodejs' 'git')
 optdepends=('kdialog: needed for file dialogs in KDE'
             'gnome-keyring: for storing passwords in GNOME keyring'
             'kwallet: for storing passwords in KWallet')
@@ -49,7 +49,7 @@ source=(https://commondatastorage.googleapis.com/chromium-browser-official/$pkgn
         0010-cleanup-how-ConfigurationPolicyProviders-are-set.patch
         skia_buildfix.patch)
 sha256sums=('93666448c6b96ec83e6a35a64cff40db4eb92a154fe1db4e7dab4761d0e38687'
-            '4dc3428f2c927955d9ae117f2fb24d098cc6dd67adb760ac9c82b522ec8b0587'
+            '04917e3cd4307d8e31bfb0027a5dce6d086edb10ff8a716024fbb8bb0c7dccf1'
             '2771c049b66c9aba3b945fe065f2610f164d55506eb5d71751a26aaf8b40d4ee'
             'e3fb73b43bb8c69ff517e66b2cac73d6e759fd240003eb35598df9af442422fe'
             'feca54ab09ac0fc9d0626770a6b899a6ac5a12173c7d0c1005bc3964ec83e7b3'
@@ -117,6 +117,10 @@ prepare() {
   fi
   echo "LASTCHANGE=$_chrome_build_hash-" >build/util/LASTCHANGE
 
+  # Allow building against system libraries in official builds
+  sed -i 's/OFFICIAL_BUILD/GOOGLE_CHROME_BUILD/' \
+    tools/generate_shim_headers/generate_shim_headers.py
+
   # Arch Linux ARM fixes
   patch -Np1 -i ../0001-ARM-toolchain-fixes.patch
   patch -Np1 -i ../0002-GCC-build-fix-mark-is_trivially_copy_constructible-f.patch
@@ -149,12 +153,8 @@ prepare() {
   patch -Np1 -i ../chromium-math.h-r0.patch
   patch -Np1 -i ../chromium-stdint.patch
 
-  # Use Python 2
-  find . -name '*.py' -exec sed -i -r 's|/usr/bin/python$|&2|g' {} +
-
-  # There are still a lot of relative calls which need a workaround
-  mkdir "$srcdir/python2-path"
-  ln -s /usr/bin/python2 "$srcdir/python2-path/python"
+  # Force script incompatible with Python 3 to use /usr/bin/python2
+  sed -i '1s|python$|&2|' third_party/dom_distiller_js/protoc_plugins/*.py
 
   mkdir -p third_party/node/linux/node-linux-x64/bin
   ln -s /usr/bin/node third_party/node/linux/node-linux-x64/bin/
@@ -188,13 +188,10 @@ build() {
     export CCACHE_SLOPPINESS=time_macros
   fi
 
-  export PATH="$srcdir/python2-path:$PATH"
-  export TMPDIR="$srcdir/temp"
-  mkdir -p "$TMPDIR"
-
   local _flags=(
     'is_clang=false'
     'clang_use_chrome_plugins=false'
+    'is_official_build=true'
     'is_cfi=false'
     'is_debug=false'
     'fatal_linker_warnings=false'
@@ -219,7 +216,15 @@ build() {
     "google_default_client_secret=\"${_google_default_client_secret}\""
   )
 
+  # Facilitate deterministic builds (taken from build/config/compiler/BUILD.gn)
+  CFLAGS+='   -Wno-builtin-macro-redefined'
+  CXXFLAGS+=' -Wno-builtin-macro-redefined'
+  CPPFLAGS+=' -D__DATE__=  -D__TIME__=  -D__TIMESTAMP__='
+
   if check_option strip y; then
+    _flags+=('symbol_level=0')
+
+    # Mimic exclude_unwind_tables=true
     CFLAGS+='   -fno-unwind-tables -fno-asynchronous-unwind-tables'
     CXXFLAGS+=' -fno-unwind-tables -fno-asynchronous-unwind-tables'
     CPPFLAGS+=' -DNO_UNWIND_TABLES'