diff --git a/games/atari800/atari800.SlackBuild b/games/atari800/atari800.SlackBuild
index 854d2ad339..a4d603a8f3 100644
--- a/games/atari800/atari800.SlackBuild
+++ b/games/atari800/atari800.SlackBuild
@@ -6,6 +6,10 @@
 
 # Licensed under the WTFPL. See http://www.wtfpl.net/txt/copying/ for details.
 
+# 20240312 bkw:
+# - update for v5.2.0.
+# - new-style icons.
+
 # 20220615 bkw:
 # - update for 5.0.0.
 # - add man page for new cart utility.
@@ -29,7 +33,7 @@
 cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=atari800
-VERSION=${VERSION:-5.0.0}
+VERSION=${VERSION:-5.2.0}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}
@@ -152,9 +156,20 @@ cp -a util $PKGDOCDIR
 
 # the act/*.act files are palettes from the dark ages, leave them out.
 
-# nice copyright-friendly icon
+# nice copyright-friendly icon.
+# 20240312 bkw: new-style icons.
+for px in 16 22 32 48 64 128; do
+  sz="${px}x${px}"
+  dir=$PKG/usr/share/icons/hicolor/$sz/apps
+  mkdir -p $dir
+  rsvg-convert --width=$px --height=$px data/atari2.svg > $dir/$PRGNAM.png
+done
+
+mkdir -p $PKG/usr/share/icons/hicolor/scalable/apps
+cat data/atari2.svg > $PKG/usr/share/icons/hicolor/scalable/apps/$PRGNAM.svg
+
 mkdir -p $PKG/usr/share/pixmaps
-cat data/atari2.png > $PKG/usr/share/pixmaps/$PRGNAM.png
+ln -s ../icons/hicolor/48x48/apps/$PRGNAM.png $PKG/usr/share/pixmaps/$PRGNAM.png
 
 # .desktop file written for this build
 mkdir -p $PKG/usr/share/applications
diff --git a/games/atari800/atari800.info b/games/atari800/atari800.info
index d06eb989c3..41eb3e1b95 100644
--- a/games/atari800/atari800.info
+++ b/games/atari800/atari800.info
@@ -1,8 +1,8 @@
 PRGNAM="atari800"
-VERSION="5.0.0"
+VERSION="5.2.0"
 HOMEPAGE="https://atari800.github.io/"
-DOWNLOAD="https://github.com/atari800/atari800/releases/download/ATARI800_5_0_0/atari800-5.0.0-src.tgz"
-MD5SUM="f5dc10d461d0241a5978a0998028e49a"
+DOWNLOAD="https://github.com/atari800/atari800/releases/download/ATARI800_5_2_0/atari800-5.2.0-src.tgz"
+MD5SUM="bed6188abbe73c2ac109dc954050fd46"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
 REQUIRES=""
diff --git a/games/atari800/doinst.sh b/games/atari800/doinst.sh
index 5fb28930db..65c7e2eeb9 100644
--- a/games/atari800/doinst.sh
+++ b/games/atari800/doinst.sh
@@ -1,3 +1,9 @@
 if [ -x /usr/bin/update-desktop-database ]; then
   /usr/bin/update-desktop-database -q usr/share/applications >/dev/null 2>&1
 fi
+
+if [ -e usr/share/icons/hicolor/icon-theme.cache ]; then
+  if [ -x /usr/bin/gtk-update-icon-cache ]; then
+    /usr/bin/gtk-update-icon-cache -f usr/share/icons/hicolor >/dev/null 2>&1
+  fi
+fi