diff --git a/games/m64py/README b/games/m64py/README
index 868980f98d..2a7b210c6d 100644
--- a/games/m64py/README
+++ b/games/m64py/README
@@ -1,3 +1,4 @@
-M64Py is a Qt4 front-end (GUI) for Mupen64Plus 2.0, a cross-platform
-plugin-based Nintendo 64 emulator. Front-end is written in Python and it
-provides a user-friendly interface over Mupen64Plus shared library.
+M64Py is a Qt5 front-end (GUI) for Mupen64Plus, a cross-platform
+plugin-based Nintendo 64 emulator. Front-end is written in Python
+and it provides a user-friendly interface over the Mupen64Plus
+shared library.
diff --git a/games/m64py/m64py.SlackBuild b/games/m64py/m64py.SlackBuild
index eec81bf999..16248d4ad1 100644
--- a/games/m64py/m64py.SlackBuild
+++ b/games/m64py/m64py.SlackBuild
@@ -2,7 +2,7 @@
 
 # Slackware build script for m64py
 
-# Copyright 2015 Matt Dinslage (daedra1980@gmail.com), Springfield, MO, USA
+# Copyright 2021 Matt Dinslage (daedra1980@gmail.com), Springfield, MO, USA
 # All rights reserved.
 #
 # Redistribution and use of this script, with or without modification, is
@@ -34,6 +34,7 @@ if [ -z "$ARCH" ]; then
   case "$( uname -m )" in
     i?86) ARCH=i586 ;;
     arm*) ARCH=arm ;;
+    # Unless $ARCH is already set, use uname -m for all other archs:
        *) ARCH=$( uname -m ) ;;
   esac
 fi
@@ -74,19 +75,19 @@ tar xvf $CWD/$PRGNAM-$VERSION.tar.gz
 cd $PRGNAM-$VERSION
 chown -R root:root .
 find -L . \
- \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 -o -perm 511 \) \
- -exec chmod 755 {} \; -o \
- \( -perm 666 -o -perm 664 -o -perm 600 -o -perm 444 -o -perm 440 -o -perm 400 \) \
- -exec chmod 644 {} \;
+ \( -perm 777 -o -perm 775 -o -perm 750 -o -perm 711 -o -perm 555 \
+  -o -perm 511 \) -exec chmod 755 {} \; -o \
+ \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
+  -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \;
 
-python setup.py install --root=$PKG
+python3 setup.py install --root=$PKG
 
-find $PKG | xargs file | grep -e "executable" -e "shared object" | grep ELF \
+find $PKG -print0 | xargs -0 file | grep -e "executable" -e "shared object" | grep ELF \
   | cut -f 1 -d : | xargs strip --strip-unneeded 2> /dev/null || true
 
 mkdir -p $PKG/usr/doc/$PRGNAM-$VERSION
 cp -a \
-  AUTHORS CHANGELOG COPYING LICENSES PKG-INFO README.rst \
+  AUTHORS CHANGELOG LICENSES README.rst \
   $PKG/usr/doc/$PRGNAM-$VERSION
 cat $CWD/$PRGNAM.SlackBuild > $PKG/usr/doc/$PRGNAM-$VERSION/$PRGNAM.SlackBuild
 
diff --git a/games/m64py/m64py.info b/games/m64py/m64py.info
index ceb0ea20e0..df39e40163 100644
--- a/games/m64py/m64py.info
+++ b/games/m64py/m64py.info
@@ -1,10 +1,10 @@
 PRGNAM="m64py"
 VERSION="0.2.5"
-HOMEPAGE="http://m64py.sourceforge.net/"
-DOWNLOAD="http://downloads.sourceforge.net/m64py/m64py-0.2.5.tar.gz"
+HOMEPAGE="https://github.com/mupen64plus/mupen64plus-ui-python"
+DOWNLOAD="https://github.com/mupen64plus/mupen64plus-ui-python/releases/download/0.2.5/m64py-0.2.5.tar.gz"
 MD5SUM="201a5b08a7ed43db26af6067a064e116"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
-REQUIRES="PySDL2 mupen64plus"
+REQUIRES="mupen64plus python3-pysdl2"
 MAINTAINER="M.Dinslage"
 EMAIL="daedra1980@gmail.com"
diff --git a/games/m64py/slack-desc b/games/m64py/slack-desc
index cea93c835e..51f40b61d8 100644
--- a/games/m64py/slack-desc
+++ b/games/m64py/slack-desc
@@ -6,14 +6,14 @@
 # customary to leave one space after the ':' except on otherwise blank lines.
 
      |-----handy-ruler------------------------------------------------------|
-m64py: m64py (mupen64plus GUI)
+m64py: m64py (A GUI frontend for Mupen64Plus)
 m64py:
-m64py: M64Py is a Qt4 front-end (GUI) for Mupen64Plus 2.0, a cross-platform
+m64py: M64Py is a Qt5 front-end (GUI) for Mupen64Plus, a cross-platform
 m64py: plugin-based Nintendo 64 emulator. Front-end is written in Python
-m64py: and it provides a user-friendly interface over Mupen64Plus shared
-m64py: library.
+m64py: and it provides a user-friendly interface over the Mupen64Plus
+m64py: shared library.
 m64py:
-m64py: Homepage: http://m64py.sourceforge.net
+m64py: Homepage: https://github.com/mupen64plus/mupen64plus-ui-python
 m64py:
 m64py:
 m64py: