diff --git a/system/86box/86box.SlackBuild b/system/86box/86box.SlackBuild
index f6ca964888..07125b84af 100644
--- a/system/86box/86box.SlackBuild
+++ b/system/86box/86box.SlackBuild
@@ -23,6 +23,8 @@
 # The other frontends are mac/windows only.
 # Anyway, it has a nice Qt GUI, I don't see why it needs a frontend.
 
+# 20240812 bkw: update for v4.2.
+
 # 20240311 bkw: update for v4.1.
 # - submitted a build for rtmidi, so it's now supported here as an
 #   optional dep.
@@ -31,7 +33,7 @@ cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=86box
 SRCNAM=86Box
-VERSION=${VERSION:-4.1}
+VERSION=${VERSION:-4.2}
 BUILD=${BUILD:-1}
 TAG=${TAG:-_SBo}
 PKGTYPE=${PKGTYPE:-tgz}
@@ -106,7 +108,7 @@ ln -s $SRCNAM $PKG/usr/bin/$PRGNAM
 mkdir -p $PKG/usr/share/$SRCNAM
 mv roms-$VERSION $PKG/usr/share/$SRCNAM/roms
 
-# Upstream ships desktop/icons, but 'make install' doesn't install it.
+# Upstream ships desktop/icons, but 'make install' doesn't install them.
 mkdir -p $PKG/usr/share/applications
 cp -a src/unix/assets/net.86box.86Box.desktop $PKG/usr/share/applications
 
@@ -123,7 +125,7 @@ mkdir -p $PKG/usr/share/pixmaps
 ln -s ../icons/hicolor/48x48/apps/net.86box.86Box.png \
       $PKG/usr/share/pixmaps/$PRGNAM.png
 
-# Make the slack-desc show whether option rtmidi support is built in.
+# Make the slack-desc show whether optional rtmidi support is built in.
 WITH=WITHOUT
 objdump -p $PKG/usr/bin/$PRGNAM | grep -q 'NEEDED.*librtmidi' && WITH="WITH"
 
diff --git a/system/86box/86box.info b/system/86box/86box.info
index 97b23319ab..4be09a7186 100644
--- a/system/86box/86box.info
+++ b/system/86box/86box.info
@@ -1,10 +1,10 @@
 PRGNAM="86box"
-VERSION="4.1"
+VERSION="4.2"
 HOMEPAGE="https://86box.net/"
-DOWNLOAD="https://github.com/86Box/86Box/archive/v4.1/86Box-4.1.tar.gz \
-          https://github.com/86Box/roms/archive/v4.1/roms-4.1.tar.gz"
-MD5SUM="a209227eb5c2ca9f3c11dae1441b4468 \
-        2c04a4c1c4ec140a6d5dcfc54d882027"
+DOWNLOAD="https://github.com/86Box/86Box/archive/v4.2/86Box-4.2.tar.gz \
+          https://github.com/86Box/roms/archive/v4.2/roms-4.2.tar.gz"
+MD5SUM="a9c9bffbac22e5ea1dd3cfe672eb7f83 \
+        d019e36ad71665abc54044c77513fef1"
 DOWNLOAD_x86_64=""
 MD5SUM_x86_64=""
 REQUIRES="libslirp"