diff --git a/app-i18n/librime-lua/librime-lua-20240819212322-r1.ebuild b/app-i18n/librime-lua/librime-lua-20240819212322-r1.ebuild
index d103b463fc091..527f47e300500 100644
--- a/app-i18n/librime-lua/librime-lua-20240819212322-r1.ebuild
+++ b/app-i18n/librime-lua/librime-lua-20240819212322-r1.ebuild
@@ -4,7 +4,7 @@
 EAPI="8"
 LUA_COMPAT=( lua5-{1..4} luajit )
 
-inherit cmake lua-single
+inherit cmake flag-o-matic lua-single
 
 if [[ "${PV}" == "99999999999999" ]]; then
 	inherit git-r3
@@ -47,3 +47,13 @@ src_prepare() {
 
 	cmake_src_prepare
 }
+
+src_configure() {
+	# -Werror=strict-aliasing
+	# https://bugs.gentoo.org/940793
+	# https://github.com/hchunhui/librime-lua/issues/412
+	append-flags -fno-strict-aliasing
+	filter-lto
+
+	cmake_src_configure
+}
diff --git a/app-i18n/librime-lua/librime-lua-99999999999999.ebuild b/app-i18n/librime-lua/librime-lua-99999999999999.ebuild
index 79886c25f0873..7fb714fcc7e6a 100644
--- a/app-i18n/librime-lua/librime-lua-99999999999999.ebuild
+++ b/app-i18n/librime-lua/librime-lua-99999999999999.ebuild
@@ -4,7 +4,7 @@
 EAPI="8"
 LUA_COMPAT=( lua5-{1..4} luajit )
 
-inherit cmake lua-single
+inherit cmake flag-o-matic lua-single
 
 if [[ "${PV}" == "99999999999999" ]]; then
 	inherit git-r3
@@ -46,3 +46,13 @@ src_prepare() {
 
 	cmake_src_prepare
 }
+
+src_configure() {
+	# -Werror=strict-aliasing
+	# https://bugs.gentoo.org/940793
+	# https://github.com/hchunhui/librime-lua/issues/412
+	append-flags -fno-strict-aliasing
+	filter-lto
+
+	cmake_src_configure
+}