diff --git a/debian/ffmpeg-v4l2-request-fourier/build-deb.sh b/debian/ffmpeg-v4l2-request-fourier/build-deb.sh
index 03fb13d2a0..3081fb46e6 100755
--- a/debian/ffmpeg-v4l2-request-fourier/build-deb.sh
+++ b/debian/ffmpeg-v4l2-request-fourier/build-deb.sh
@@ -33,7 +33,10 @@ FFMPEG_VERSION=8.1
 # epoch 2 matches Debian's stock ffmpeg (currently 7:7.1.x in trixie);
 # +rfourier suffix to avoid colliding with upstream/Debian rebuilds.
 PKGVER=2:${FFMPEG_VERSION}+rfourier+gb57fbbe
-PKGREL=3  # pkgrel=3 — H.264 IDCT 4x4 daedalus-fourier substitution (2026-05-21)
+PKGREL=5  # pkgrel=5 — H.264 IDCT 4x4 daedalus-fourier substitution; skip past
+          # an orphan -4 .deb sitting in the apt pool that made
+          # check-already-published.sh's `pool_ver ge source_full` short-
+          # circuit the previous -3 build (PR #76).  (2026-05-21)
 
 # daedalus-fourier pin — first kernel substitution in libavcodec (cycle 6
 # H.264 IDCT 4x4).  Same SHA as the daedalus-v4l2 daemon already ships
diff --git a/debian/ffmpeg-v4l2-request-fourier/debian/changelog b/debian/ffmpeg-v4l2-request-fourier/debian/changelog
index 7ee6d335fc..aec93033cc 100644
--- a/debian/ffmpeg-v4l2-request-fourier/debian/changelog
+++ b/debian/ffmpeg-v4l2-request-fourier/debian/changelog
@@ -1,3 +1,19 @@
+ffmpeg-v4l2-request-fourier (2:8.1+rfourier+gb57fbbe-5) bookworm trixie; urgency=medium
+
+  * pkgrel-only bump (3 → 5) to force a rebuild of the H.264 IDCT 4x4
+    daedalus-fourier substitution that landed in marfrit-packages PR
+    #76.  An orphan -4 .deb already sat in the apt pool (dated
+    2026-05-19, no matching source commit in main); CI's
+    check-already-published.sh compares with `dpkg --compare-versions
+    pool_ver ge source_full`, which short-circuited PR #76's -3
+    build.  Skipping past -4 lets the CI workflow actually publish the
+    substitution.
+  * No source code change beyond PKGREL and this changelog entry.
+    Substitution + control + build-deb.sh wiring stay as PR #76 left
+    them.
+
+ -- Markus Fritsche <mfritsche@reauktion.de>  Thu, 21 May 2026 21:30:00 +0000
+
 ffmpeg-v4l2-request-fourier (2:8.1+rfourier+gb57fbbe-3) bookworm trixie; urgency=medium
 
   * Add 0003-h264-idct4-daedalus-fourier.patch — H264DSPContext.idct_add