diff --git a/VERSION b/VERSION
index e5f8fef..1bcb9da 100644
--- a/VERSION
+++ b/VERSION
@@ -1 +1 @@
-1.9.14
+1.9.15
diff --git a/changelog.json b/changelog.json
index 6ab5952..09976e9 100644
--- a/changelog.json
+++ b/changelog.json
@@ -1,5 +1,18 @@
 {
   "versions": [
+    {
+      "version": "1.9.15",
+      "date": "2026-06-01",
+      "changes": {
+        "features": [
+          "Capteur CO2 Senseair S88: ajout d'un sélecteur de port UART (S88_port) sous la checkbox 'Send CO2 sensor data' dans admin.html. Permet de choisir parmi ttyAMA0/2/3/4/5 sans passer par la CLI."
+        ],
+        "improvements": [],
+        "fixes": [],
+        "compatibility": []
+      },
+      "notes": "Aucun changement de schéma. La clé S88_port existe déjà en base depuis v1.9.13 — le sélecteur expose juste sa modification via l'UI."
+    },
     {
       "version": "1.9.14",
       "date": "2026-06-01",
diff --git a/html/admin.html b/html/admin.html
index ce6d4b9..63cfceb 100755
--- a/html/admin.html
+++ b/html/admin.html
@@ -144,6 +144,16 @@
                 <label class="form-check-label" for="check_s88">
                   Send CO2 sensor data (Senseair S88)
                 </label>
+                <div class="mt-2 ms-4" style="max-width: 250px;">
+                  <label for="s88_port" class="form-label small mb-1">Port UART du capteur S88</label>
+                  <select class="form-select form-select-sm" id="s88_port" onchange="update_config_sqlite('S88_port', this.value)">
+                    <option value="/dev/ttyAMA0">/dev/ttyAMA0</option>
+                    <option value="/dev/ttyAMA2">/dev/ttyAMA2</option>
+                    <option value="/dev/ttyAMA3">/dev/ttyAMA3</option>
+                    <option value="/dev/ttyAMA4">/dev/ttyAMA4</option>
+                    <option value="/dev/ttyAMA5">/dev/ttyAMA5</option>
+                  </select>
+                </div>
               </div>
 
               <div class="form-check mb-3">
@@ -598,6 +608,9 @@ window.onload = function() {
       checkbox_noise.checked = response["NOISE"];
       checkbox_mhz19.checked = response["MHZ19"];
       checkbox_s88.checked = response["S88"];
+      if (response["S88_port"]) {
+        document.getElementById("s88_port").value = response["S88_port"];
+      }
       checkbox_wifi_power_saving.checked = response["wifi_power_saving"];
 
       checkbox_uSpot.checked = response["send_uSpot"];