diff --git a/dev/patchbot/scripts/post-ai.sh b/dev/patchbot/scripts/post-ai.sh
index 8367912fa..0db78aae9 100755
--- a/dev/patchbot/scripts/post-ai.sh
+++ b/dev/patchbot/scripts/post-ai.sh
@@ -24,20 +24,30 @@ quit() {
 
 #### Main
 
-USAGE="Usage: ${0##*/} [ -h ] [ -b 'bkp_list' ] patch..."
+USAGE="Usage: ${0##*/} [ -h ] [ -b 'bkp_list' ] [ -v version ] patch..."
 MYSELF="$0"
 GITURL="http://git.haproxy.org/?p=haproxy.git;a=commitdiff;h="
 ISSUES="https://github.com/haproxy/haproxy/issues/"
 BKP=""
+VERSION=""
 
 while [ -n "$1" -a -z "${1##-*}" ]; do
 	case "$1" in
 		-h|--help) quit "$USAGE" ;;
 		-b)        BKP="$2"; shift 2 ;;
+		-v)        VERSION="$2"; shift 2 ;;
 		*)         die  "$USAGE" ;;
 	esac
 done
 
+# VERSION is the branch this page covers (eg: 3.5). It is only used by the
+# in-page JS to sync the review state with the server-side update.cgi, which
+# strictly validates it, so let's check it here as well. When empty, the
+# syncing UI is not emitted at all and the page keeps working standalone.
+if [ -n "$VERSION" ] && ! [[ "$VERSION" =~ ^[0-9]+\.[0-9]+$ ]]; then
+	die "Invalid version '$VERSION', expected <digits>.<digits>"
+fi
+
 PATCHES=( "$@" )
 
 if [ ${#PATCHES[@]} = 0 ]; then
@@ -139,6 +149,11 @@ var nb_patches = 0;
 var cid = [];
 var bkp = [];
 
+// the branch this page covers (eg: "3.5"), used to sync the review state
+// with the server-side update.cgi; empty when generated without -v, in
+// which case no syncing is possible and the page works standalone.
+var branch = '$VERSION';
+
 // first line to review
 var review = 0;
 
diff --git a/dev/patchbot/scripts/update-3.0.sh b/dev/patchbot/scripts/update-3.0.sh
index b661f26cb..432a9113d 100755
--- a/dev/patchbot/scripts/update-3.0.sh
+++ b/dev/patchbot/scripts/update-3.0.sh
@@ -16,6 +16,14 @@ if [ -z "$BRANCH" ]; then
 	exit 1
 fi
 
+# The version is deduced from this script's name (update-3.0.sh -> 3.0), so
+# that a symlink with another version continues to work as-is. It's passed
+# to post-ai.sh for the page to know which branch to sync with update.cgi;
+# if the name doesn't match, no version is passed and the page simply won't
+# offer syncing.
+VERSION="${0##*/}"; VERSION="${VERSION#update-}"; VERSION="${VERSION%.sh}"
+[[ "$VERSION" =~ ^[0-9]+\.[0-9]+$ ]] || VERSION=""
+
 # eg: for v3.0-dev0^ we should get v2.9.0 hence "2.9"
 STABLE=$(cd "$HAPROXY_DIR" && git describe --tags "v${BRANCH}-dev0^" |cut -f1,2 -d.|cut -f2- -dv)
 
@@ -64,4 +72,4 @@ fi
 time EXT=m7bv02.txt MODEL=${MODELS_DIR}/mistral-7b-instruct-v0.2.Q5_K_M.gguf CACHE=${PROMPTS_DIR}/prompt-${BRANCH}-m7bv02.cache PROMPT_PFX=${PROMPTS_DIR}/prompt15-${BRANCH}-mist7bv2-pfx.txt PROMPT_SFX=${PROMPTS_DIR}/prompt15-${BRANCH}-mist7bv2-sfx.txt MAINPROG=$MAINPROG PROGRAM="$SCRIPTS_DIR"/process-patch-v15.sh "$SCRIPTS_DIR"/submit-ai.sh -s ${PARALLEL_RUNS} ${PATCHES_DIR}/*.patch
 
 # generate the output, takes 3-5 seconds
-"$SCRIPTS_DIR"/post-ai.sh -b "${BKP[*]}" ${PATCHES_DIR}/*.m7bv02.txt > ${VERDICT_DIR}/verdict-${BRANCH}-m7bv02.html
+"$SCRIPTS_DIR"/post-ai.sh ${VERSION:+-v "$VERSION"} -b "${BKP[*]}" ${PATCHES_DIR}/*.m7bv02.txt > ${VERDICT_DIR}/verdict-${BRANCH}-m7bv02.html