diff --git a/convertall/PKGBUILD b/convertall/PKGBUILD
index 573b871d5..eab69ae0f 100644
--- a/convertall/PKGBUILD
+++ b/convertall/PKGBUILD
@@ -1,40 +1,27 @@
 pkgname=convertall
-pkgver=0.7.2
+pkgver=0.7.5
 pkgrel=1
 pkgdesc="Unit conversion program (Qt)"
 arch=('x86_64')
-url="http://convertall.bellz.org/"
+url="https://convertall.bellz.org/"
 license=('GPL')
-depends=('python3-pyqt5')
+depends=('python3-pyqt5' 'desktop-file-utils')
 categories=('utils')
-source=(http://downloads.sourceforge.net/sourceforge/$pkgname/$pkgver/$pkgname-$pkgver.tar.gz
-        "correctpaths.patch"
-        "convertall.desktop")
-sha256sums=('9d465d12fbb45f88359b1d80619658143b203014157f65843917c1f63337c8a4'
-            '366ea0e23197b469402c2b3d6cdf4a77388813b91254d1ce3603e6cd0787fc3b'
-            '939c566d8015b6b0ab8dc82ba5161643c25c8619bd81b7d165c03eda33669ccb')
+source=(https://downloads.sourceforge.net/sourceforge/$pkgname/$pkgver/$pkgname-$pkgver.tar.gz)
+sha1sums=('eefe59873e4fc0d905ca79272796694107b08924')
 
 package() {
-# patch executable to have the correct paths
-patch -Np0 < $srcdir/correctpaths.patch
+  cd ConvertAll
 
-# create install directories
-  install -d $pkgdir/usr/{bin,share/pixmaps}
+  python3 install.py -b "${pkgdir}" -p /usr -i /usr/share/pixmaps/convertall
+  rm "${pkgdir}/usr/share/doc/${pkgname}"/{INSTALL,LICENSE}
 
-# copy files manually
-cp -rf $srcdir/ConvertAll/source $pkgdir/usr/share/$pkgname
-cp -rf $srcdir/ConvertAll/icons $pkgdir/usr/share/$pkgname
-cp -rf $srcdir/ConvertAll/doc $pkgdir/usr/share/$pkgname/help
-cp -rf $srcdir/ConvertAll/data $pkgdir/usr/share/$pkgname
-
-# create symlink in /usr/bin
-ln -s /usr/share/$pkgname/$pkgname.py $pkgdir/usr/bin/$pkgname
-
-# install desktop file
-install -Dm644 $srcdir/$pkgname.desktop \
-	$pkgdir/usr/share/applications/$pkgname.desktop
-
-# symlink icon in /usr/share/pixmaps
-ln -s /usr/share/$pkgname/icons/$pkgname.svg \
-	$pkgdir/usr/share/pixmaps/$pkgname.svg
+  install -Dm644 icons/convertall-icon.svg \
+    "${pkgdir}/usr/share/icons/hicolor/scalable/apps/convertall.svg"
+  install -Dm644 icons/convertall_lg.png \
+    "${pkgdir}/usr/share/icons/hicolor/64x64/apps/convertall.png"
+  install -Dm644 icons/convertall_med.png \
+    "${pkgdir}/usr/share/icons/hicolor/32x32/apps/convertall.png"
+  install -Dm644 icons/convertall_sm.png \
+    "${pkgdir}/usr/share/icons/hicolor/16x16/apps/convertall.png"
 }
diff --git a/convertall/convertall.desktop b/convertall/convertall.desktop
deleted file mode 100644
index b9995b415..000000000
--- a/convertall/convertall.desktop
+++ /dev/null
@@ -1,14 +0,0 @@
-[Desktop Entry]
-Version=1.0
-Name=ConvertAll
-Name[it]=ConvertAll
-GenericName=Unit Converter
-GenericName[it]=Convertitore di Unità
-Comment=Convert between many different units
-Comment[it]=Convertitore per molte unità di misura
-Icon=convertall
-Exec=convertall
-Terminal=false
-Type=Application
-Categories=Science
-
diff --git a/convertall/correctpaths.patch b/convertall/correctpaths.patch
deleted file mode 100644
index 759b7f202..000000000
--- a/convertall/correctpaths.patch
+++ /dev/null
@@ -1,15 +0,0 @@
---- ConvertAll/source/convertall.py	2008-05-28 12:51:46.000000000 +0200
-+++ ConvertAll/source/convertall.py.new	2008-05-29 11:54:27.000000000 +0200
-@@ -17,9 +17,9 @@
- __version__ = '0.4.2'
- __author__ = 'Doug Bell'
- 
--dataFilePath = None    # modified by install script if required
--helpFilePath = None    # modified by install script if required
--iconPath = None        # modified by install script if required
-+dataFilePath = '/usr/share/convertall/data'
-+helpFilePath = '/usr/share/convertall/help'
-+iconPath = '/usr/share/convertall/icons'
- translationPath = 'translations'
- lang = ''
- 
diff --git a/convertall/use-default-qt-style.patch b/convertall/use-default-qt-style.patch
deleted file mode 100644
index 6f186975a..000000000
--- a/convertall/use-default-qt-style.patch
+++ /dev/null
@@ -1,11 +0,0 @@
---- ConvertAll/source/convertall.py.old	2011-04-14 15:21:48.409861085 +0200
-+++ ConvertAll/source/convertall.py	2011-04-14 15:22:56.159494054 +0200
-@@ -151,8 +151,6 @@
-     setupTranslator(app)  # must be before importing any convertall modules
-     setLocalEncoding()
-     import convertdlg
--    if not userStyle and not sys.platform.startswith('win'):
--        QtGui.QApplication.setStyle('plastique')
-     win = convertdlg.ConvertDlg()
-     win.show()
-     signal.signal(signal.SIGINT, signal.SIG_IGN)