diff --git a/packaging/void/build-xbps.sh b/packaging/void/build-xbps.sh
index fd94bd9..4156c0e 100755
--- a/packaging/void/build-xbps.sh
+++ b/packaging/void/build-xbps.sh
@@ -101,7 +101,9 @@ mkdir -p "$REPO"
 mv -f "$OUT"/${PKGVER}.*.xbps "$REPO/"
 
 echo "==> Indexing local repository"
-xbps-rindex -a "$REPO"/*.xbps
+# -f re-adds a package whose version is already indexed. Without it a rebuild of the
+# same version keeps the old checksum in the index and xbps-install rejects the new file.
+xbps-rindex -f -a "$REPO"/*.xbps
 
 echo
 echo "Package: $REPO/${PKGVER}.${ARCH}.xbps"