diff --git a/lerobot/html_dataset_visualizer/src/app/[org]/[dataset]/[episode]/fetch-data.ts b/lerobot/html_dataset_visualizer/src/app/[org]/[dataset]/[episode]/fetch-data.ts
index e5056b985..54a098061 100644
--- a/lerobot/html_dataset_visualizer/src/app/[org]/[dataset]/[episode]/fetch-data.ts
+++ b/lerobot/html_dataset_visualizer/src/app/[org]/[dataset]/[episode]/fetch-data.ts
@@ -10,6 +10,8 @@ import { pick } from "@/utils/pick";
 const DATASET_URL =
   process.env.DATASET_URL || "https://huggingface.co/datasets";
 
+const DEFAULT_REVISION = "v2.1";
+
 const SERIES_NAME_DELIMITER = " | ";
 
 export async function getEpisodeData(
@@ -20,7 +22,7 @@ export async function getEpisodeData(
   const repoId = `${org}/${dataset}`;
   try {
     const episode_chunk = Math.floor(0 / 1000);
-    const jsonUrl = `${DATASET_URL}/${repoId}/resolve/main/meta/info.json`;
+    const jsonUrl = `${DATASET_URL}/${repoId}/resolve/${DEFAULT_REVISION}/meta/info.json`;
 
     const info = await fetchJson<DatasetMetadata>(jsonUrl);
 
@@ -56,7 +58,7 @@ export async function getEpisodeData(
         });
         return {
           filename: key,
-          url: `${DATASET_URL}/${repoId}/resolve/main/` + videoPath,
+          url: `${DATASET_URL}/${repoId}/resolve/${DEFAULT_REVISION}/` + videoPath,
         };
       });
 
@@ -103,7 +105,7 @@ export async function getEpisodeData(
     });
 
     const parquetUrl =
-      `${DATASET_URL}/${repoId}/resolve/main/` +
+      `${DATASET_URL}/${repoId}/resolve/${DEFAULT_REVISION}/` +
       formatStringWithVars(info.data_path, {
         episode_chunk: episode_chunk.toString().padStart(3, "0"),
         episode_index: episodeId.toString().padStart(6, "0"),
diff --git a/lerobot/html_dataset_visualizer/src/app/explore/page.tsx b/lerobot/html_dataset_visualizer/src/app/explore/page.tsx
index 5a175f028..d3ad52f69 100644
--- a/lerobot/html_dataset_visualizer/src/app/explore/page.tsx
+++ b/lerobot/html_dataset_visualizer/src/app/explore/page.tsx
@@ -38,6 +38,9 @@ export default async function ExplorePage({
     return <div className="p-8 text-red-600">Failed to load datasets.</div>;
   }
 
+  // Default to v2.1 revision for dataset loading
+  const DEFAULT_REVISION = "v2.1";
+
   // Fetch episode 0 data for each dataset
   const datasetWithVideos = (
     await Promise.all(
@@ -45,7 +48,7 @@ export default async function ExplorePage({
         try {
           const [org, dataset] = ds.id.split("/");
           const repoId = `${org}/${dataset}`;
-          const jsonUrl = `https://huggingface.co/datasets/${repoId}/resolve/main/meta/info.json`;
+          const jsonUrl = `https://huggingface.co/datasets/${repoId}/resolve/${DEFAULT_REVISION}/meta/info.json`;
           const info = await fetchJson<DatasetMetadata>(jsonUrl);
           const videoEntry = Object.entries(info.features).find(
             ([key, value]) => value.dtype === "video",
@@ -59,7 +62,7 @@ export default async function ExplorePage({
               episode_index: "0".padStart(6, "0"),
             });
             const url =
-              `https://huggingface.co/datasets/${repoId}/resolve/main/` +
+              `https://huggingface.co/datasets/${repoId}/resolve/${DEFAULT_REVISION}/` +
               videoPath;
             // Check if videoUrl exists (status 200)
             try {