diff --git a/arch/ffmpeg-v4l2-request-fourier/PKGBUILD b/arch/ffmpeg-v4l2-request-fourier/PKGBUILD
index 98bdab121..d92db5daf 100644
--- a/arch/ffmpeg-v4l2-request-fourier/PKGBUILD
+++ b/arch/ffmpeg-v4l2-request-fourier/PKGBUILD
@@ -24,7 +24,7 @@ _srcname=FFmpeg
 _version='8.1'
 _commit='b57fbbe50c9b2656fad86a1a7eeabfd2b2a50935'  # v4l2-request-n8.1 tip 2026-04-24
 pkgver=8.1.r123329.b57fbbe
-pkgrel=15  # pkgrel=15 — export ff_h264_set_mb_inspect_cb via libavcodec.v so dlsym consumers (daedalus-v4l2 daemon shadow_decoder, PR-Q3a.1) can resolve the symbol; static-link CLI was unaffected. No behaviour change to existing decode path. (2026-05-26)
+pkgrel=16  # pkgrel=16 — rebuild against libx265.so=216 (system upgrade broke SO name dep)
 epoch=2
 
 # daedalus-fourier pin.  209a421 = PR #2 merge (Phase 8c — public API