diff --git a/media-video/aegisub/aegisub-9999.ebuild b/media-video/aegisub/aegisub-9999.ebuild
index ec9f1c0..02ed588 100644
--- a/media-video/aegisub/aegisub-9999.ebuild
+++ b/media-video/aegisub/aegisub-9999.ebuild
@@ -132,6 +132,7 @@ src_configure() {
 
 src_compile() {
 	use dependency_control && BUILD_DIR="${WORKDIR}/ffi-experiments-build" meson_src_compile
+	use bestsource && meson subprojects packagefiles --apply bestsource && meson subprojects --apply vapoursynth
 	meson_src_compile
 }