diff --git a/system/public/lacma-2026/index.html b/system/public/lacma-2026/index.html
index bac9477c7f..7d6c71a2ee 100644
--- a/system/public/lacma-2026/index.html
+++ b/system/public/lacma-2026/index.html
@@ -617,11 +617,11 @@
     <div class="demo-pair">
       <div class="demo-frame">
         <video id="demo-video"
-          poster="https://assets.aesthetic.computer/lacma-2026/ac-native-demo-narrated-poster.jpg"
+          poster="https://assets.aesthetic.computer/lacma-2026/ac-native-demo-narrated-poster.jpg?v=3"
           autoplay muted loop playsinline controls preload="metadata">
-          <source src="https://assets.aesthetic.computer/lacma-2026/ac-native-demo-narrated.webm" type="video/webm">
-          <source src="https://assets.aesthetic.computer/lacma-2026/ac-native-demo-narrated.mp4" type="video/mp4">
-          Your browser doesn't support HTML5 video. <a href="https://assets.aesthetic.computer/lacma-2026/ac-native-demo-narrated.mp4">Download the MP4</a>.
+          <source src="https://assets.aesthetic.computer/lacma-2026/ac-native-demo-narrated.webm?v=3" type="video/webm">
+          <source src="https://assets.aesthetic.computer/lacma-2026/ac-native-demo-narrated.mp4?v=3" type="video/mp4">
+          Your browser doesn't support HTML5 video. <a href="https://assets.aesthetic.computer/lacma-2026/ac-native-demo-narrated.mp4?v=3">Download the MP4</a>.
         </video>
       </div>
       <div class="demo-hardware">
@@ -646,6 +646,7 @@
       const tabs = document.querySelectorAll(".demo-tab");
       const video = document.getElementById("demo-video");
       const ASSET_BASE = "https://assets.aesthetic.computer/lacma-2026";
+      const V = "?v=3";  // bump when videos are re-rendered
       tabs.forEach(tab => tab.addEventListener("click", () => {
         if (tab.classList.contains("active")) return;
         tabs.forEach(t => t.classList.remove("active"));
@@ -655,9 +656,9 @@
         const wasMuted = video.muted;
         video.pause();
         video.innerHTML = `
-          <source src="${ASSET_BASE}/${base}.webm" type="video/webm">
-          <source src="${ASSET_BASE}/${base}.mp4" type="video/mp4">`;
-        video.poster = `${ASSET_BASE}/${poster}.jpg`;
+          <source src="${ASSET_BASE}/${base}.webm${V}" type="video/webm">
+          <source src="${ASSET_BASE}/${base}.mp4${V}" type="video/mp4">`;
+        video.poster = `${ASSET_BASE}/${poster}.jpg${V}`;
         // Narrated tab → prefer unmuted so VO plays (browser may block).
         video.muted = base.includes("narrated") ? false : true;
         video.load();