diff --git a/sdk_container/src/third_party/portage-stable/dev-libs/nspr/nspr-4.35-r2.ebuild b/sdk_container/src/third_party/portage-stable/dev-libs/nspr/nspr-4.35-r2.ebuild
index ec3cb17b01..01df06b9ec 100644
--- a/sdk_container/src/third_party/portage-stable/dev-libs/nspr/nspr-4.35-r2.ebuild
+++ b/sdk_container/src/third_party/portage-stable/dev-libs/nspr/nspr-4.35-r2.ebuild
@@ -62,6 +62,14 @@ src_prepare() {
 }
 
 multilib_src_configure() {
+	# -Werror=strict-aliasing
+	# https://bugs.gentoo.org/867634
+	#
+	# Testsuite-only issue. Still, this makes it challenging to test the package with LTO
+	# enabled...
+	append-flags -fno-strict-aliasing
+	filter-lto
+
 	# The build system overrides user optimization level based on a configure flag. #886987
 	local my_optlvl=$(get-flag '-O*')