diff --git a/sci-astronomy/kstars/kstars-9999.ebuild b/sci-astronomy/kstars/kstars-9999.ebuild
index 0a74bb36680..9d5648338b3 100644
--- a/sci-astronomy/kstars/kstars-9999.ebuild
+++ b/sci-astronomy/kstars/kstars-9999.ebuild
@@ -5,8 +5,8 @@ EAPI=8
 
 ECM_HANDBOOK="forceoptional"
 ECM_TEST="true"
-KFMIN=5.115.0
-QTMIN=5.15.12
+KFMIN=6.5.0
+QTMIN=6.7.2
 inherit ecm kde.org optfeature
 
 DESCRIPTION="Desktop Planetarium"
@@ -18,60 +18,51 @@ if [[ ${KDE_BUILD_TYPE} = release ]]; then
 fi
 
 LICENSE="GPL-2+ GPL-3+"
-SLOT="5"
+SLOT="0"
 IUSE="+password raw wcs"
 
 # IUSE wcs needed by TestPolarAlign
 REQUIRED_USE="${PYTHON_REQUIRED_USE} test? ( wcs )"
 
+# https://wiki.gentoo.org/wiki/Project:Qt/Qt6_migration_notes#Still_unpackaged
+# >=dev-qt/qtdatavis3d-${QTMIN}:6
 COMMON_DEPEND="
-	>=dev-qt/qtdatavis3d-${QTMIN}:5
-	>=dev-qt/qtdbus-${QTMIN}:5
-	>=dev-qt/qtdeclarative-${QTMIN}:5
-	>=dev-qt/qtgui-${QTMIN}:5
-	>=dev-qt/qtnetwork-${QTMIN}:5
-	>=dev-qt/qtprintsupport-${QTMIN}:5
-	>=dev-qt/qtsql-${QTMIN}:5
-	>=dev-qt/qtsvg-${QTMIN}:5
-	>=dev-qt/qtwebsockets-${QTMIN}:5
-	>=dev-qt/qtwidgets-${QTMIN}:5
-	>=kde-frameworks/kconfig-${KFMIN}:5
-	>=kde-frameworks/kconfigwidgets-${KFMIN}:5
-	>=kde-frameworks/kcoreaddons-${KFMIN}:5
-	>=kde-frameworks/kcrash-${KFMIN}:5
-	>=kde-frameworks/ki18n-${KFMIN}:5
-	>=kde-frameworks/kio-${KFMIN}:5
-	>=kde-frameworks/knewstuff-${KFMIN}:5
-	>=kde-frameworks/knotifications-${KFMIN}:5
-	>=kde-frameworks/knotifyconfig-${KFMIN}:5
-	>=kde-frameworks/kplotting-${KFMIN}:5
-	>=kde-frameworks/kwidgetsaddons-${KFMIN}:5
-	>=kde-frameworks/kxmlgui-${KFMIN}:5
+	>=dev-qt/qtbase-${QTMIN}:6[dbus,gui,network,sql,widgets]
+	>=dev-qt/qtdeclarative-${QTMIN}:6
+	>=dev-qt/qtsvg-${QTMIN}:6
+	>=dev-qt/qtwebsockets-${QTMIN}:6
+	>=kde-frameworks/kconfig-${KFMIN}:6
+	>=kde-frameworks/kconfigwidgets-${KFMIN}:6
+	>=kde-frameworks/kcoreaddons-${KFMIN}:6
+	>=kde-frameworks/kcrash-${KFMIN}:6
+	>=kde-frameworks/ki18n-${KFMIN}:6
+	>=kde-frameworks/kio-${KFMIN}:6
+	>=kde-frameworks/knewstuff-${KFMIN}:6
+	>=kde-frameworks/knotifications-${KFMIN}:6
+	>=kde-frameworks/knotifyconfig-${KFMIN}:6
+	>=kde-frameworks/kplotting-${KFMIN}:6
+	>=kde-frameworks/kwidgetsaddons-${KFMIN}:6
+	>=kde-frameworks/kxmlgui-${KFMIN}:6
 	sci-libs/cfitsio:=
 	sci-libs/gsl:=
 	>=sci-libs/indilib-2.0.2
 	sci-libs/libnova:=
 	>=sci-libs/stellarsolver-2.2
 	sys-libs/zlib
-	password? ( dev-libs/qtkeychain:=[qt5(+)] )
+	password? ( >=dev-libs/qtkeychain-0.14.2:=[qt6(+)] )
 	raw? ( media-libs/libraw:= )
 	wcs? ( sci-astronomy/wcslib:= )
 "
-# TODO: Add back when re-enabled by upstream
-# 	opengl? (
-# 		>=dev-qt/qtopengl-${QTMIN}:5
-# 		virtual/opengl
-# 	)
+# TODO: what about virtual/opengl?
 DEPEND="${COMMON_DEPEND}
 	dev-cpp/eigen:3
-	>=dev-qt/qtconcurrent-${QTMIN}:5
+	>=dev-qt/qtbase-${QTMIN}:6[concurrent]
 	test? ( sci-astronomy/erfa )
 "
 RDEPEND="${COMMON_DEPEND}
-	>=dev-qt/qtgraphicaleffects-${QTMIN}:5
-	>=dev-qt/qtpositioning-${QTMIN}:5
-	>=dev-qt/qtquickcontrols-${QTMIN}:5
-	>=dev-qt/qtquickcontrols2-${QTMIN}:5
+	!${CATEGORY}/${PN}:5
+	>=dev-qt/qt5compat-${QTMIN}:6[qml]
+	>=dev-qt/qtpositioning-${QTMIN}:6
 "
 
 CMAKE_SKIP_TESTS=(
@@ -86,8 +77,9 @@ CMAKE_SKIP_TESTS=(
 src_configure() {
 	local mycmakeargs=(
 		-DCMAKE_DISABLE_FIND_PACKAGE_LibXISF=ON # not packaged
+		-DBUILD_QT5=OFF # KF6 please
 		-DBUILD_DOC=$(usex handbook)
-		$(cmake_use_find_package password Qt5Keychain)
+		$(cmake_use_find_package password Qt6Keychain)
 		$(cmake_use_find_package raw LibRaw)
 		$(cmake_use_find_package wcs WCSLIB)
 	)