diff --git a/app-accessibility/rhvoice-core/Manifest b/app-accessibility/rhvoice-core/Manifest
index 27a31d0a9f..3ddd383610 100644
--- a/app-accessibility/rhvoice-core/Manifest
+++ b/app-accessibility/rhvoice-core/Manifest
@@ -1,4 +1,4 @@
-DIST RHVoice-1.14.0-sanitizers.tar.gz 7339 BLAKE2B e600886c9afed2681ea7ad5fd9900af7d3f98a7d96291af7c9ef648be438d149e86ee143f3fa5af0dee08457008ce66be43177adcac79401ef025ddd0d8d40fe SHA512 61df4641f3dbeca38cff44336df6fcea75d02d97135a677df51a02353b5580a96dd77af268bd42944afe36a58512fd948200098ea96a41d20ec503fc33a69421
-DIST RHVoice-1.14.0.tar.gz 3181853 BLAKE2B c3c8c7437aa859898dec8747963aa23e6e16b975b58d76f9b1ade3d1c17d9d4e63c24469a670c1210f9a1501606a34b6adf52ab4c64abfddb97541cced8f82b2 SHA512 dab57df49bdb1e2c574cd10e17e5bea08144a105d8f48991cef14b80d28db98dcae29b19d69ec97fc843ee8636d53c48845a3887552d347f117339c95fa0daf1
 DIST RHVoice-1.16.4-sanitizers.tar.gz 7339 BLAKE2B e600886c9afed2681ea7ad5fd9900af7d3f98a7d96291af7c9ef648be438d149e86ee143f3fa5af0dee08457008ce66be43177adcac79401ef025ddd0d8d40fe SHA512 61df4641f3dbeca38cff44336df6fcea75d02d97135a677df51a02353b5580a96dd77af268bd42944afe36a58512fd948200098ea96a41d20ec503fc33a69421
 DIST RHVoice-1.16.4.tar.gz 3228577 BLAKE2B f27403f726c56808484c83ddf127441286f50802b9dea423434309171e56e6f7f01ef4ab8f23ca6cd6eedf7bb24369dd48907696bc3f67bfa5081e25c2886141 SHA512 f2373551cd8b7c83f9687b000e2f0a0d1f72842b52ed10943c52552f2fb74a8751742d327112fed4265b9461ba44e5d5c765fc7607496c07f4bdd9e67ffc806b
+DIST RHVoice-1.18.1-sanitizers.tar.gz 7339 BLAKE2B e600886c9afed2681ea7ad5fd9900af7d3f98a7d96291af7c9ef648be438d149e86ee143f3fa5af0dee08457008ce66be43177adcac79401ef025ddd0d8d40fe SHA512 61df4641f3dbeca38cff44336df6fcea75d02d97135a677df51a02353b5580a96dd77af268bd42944afe36a58512fd948200098ea96a41d20ec503fc33a69421
+DIST RHVoice-1.18.1.tar.gz 3121192 BLAKE2B 976df835d50747ed47c8b1ff8e36e7b9b8b6f73b80ff86e0d9548c3bd7c7bce3773e93a4db8f8a707c56056d7f6effb17081c5444b3f4f21541d7862e2b8deb0 SHA512 054f92467fe9f82239ebbb6dc0463b45ae75b19f7756ddeeb8b97a3753a7a140f7e77edad4f2278177a35245d784fc753f40586805a80d1446b928564467707d
diff --git a/app-accessibility/rhvoice-core/rhvoice-core-1.14.0-r1.ebuild b/app-accessibility/rhvoice-core/rhvoice-core-1.18.1.ebuild
similarity index 91%
rename from app-accessibility/rhvoice-core/rhvoice-core-1.14.0-r1.ebuild
rename to app-accessibility/rhvoice-core/rhvoice-core-1.18.1.ebuild
index f5bf646e85..2fa4176430 100644
--- a/app-accessibility/rhvoice-core/rhvoice-core-1.14.0-r1.ebuild
+++ b/app-accessibility/rhvoice-core/rhvoice-core-1.18.1.ebuild
@@ -1,4 +1,4 @@
-# Copyright 2021-2024 Gentoo Authors
+# Copyright 2021-2026 Gentoo Authors
 # Distributed under the terms of the GNU General Public License v2
 
 EAPI=8
@@ -8,7 +8,7 @@ inherit cmake flag-o-matic
 MY_PN="RHVoice"
 MY_P="${MY_PN}-${PV}"
 SANITIZERS_COMMIT="99e159ec9bc8dd362b08d18436bd40ff0648417b"
-DESCRIPTION="TTS engine with extended languages support"
+DESCRIPTION="Multilingual text-to-speech engine"
 HOMEPAGE="
 	https://rhvoice.org
 	https://github.com/RHVoice/RHVoice
@@ -25,7 +25,6 @@ IUSE="ao dbus portaudio +pulseaudio +speech-dispatcher"
 REQUIRED_USE="|| ( ao portaudio pulseaudio )"
 
 COMMON_DEPEND="
-	dev-libs/boost:=
 	ao? ( media-libs/libao )
 	dbus? (
 		dev-libs/glib:2[dbus]
@@ -41,9 +40,15 @@ RDEPEND="${COMMON_DEPEND}
 "
 DEPEND="${COMMON_DEPEND}
 	dev-cpp/cli11
-	dev-libs/utfcpp
+	dev-libs/boost
+	<dev-libs/utfcpp-4.0
 "
 
+PATCHES=(
+	# https://bugs.gentoo.org/923911
+	"${FILESDIR}"/${PN}-1.16.4-flags.patch
+)
+
 DOCS=( README.md doc/. config/dicts )
 
 LANGS=( en ru )