diff --git a/CHANGELOG.md b/CHANGELOG.md
index eed989a..35c81ab 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -13,6 +13,13 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ### Removed
 
+## [0.1.2] - 2026-05-25
+
+### Added
+
+- Support for pnpm 11
+- Support for OME-Zarr v0.5
+
 ## [0.1.1] - 2026-04-10
 
 ### Added
@@ -49,7 +56,8 @@ Complete package.json
 
 Initial release
 
-[unreleased]: https://github.com/TissUUmaps/OMEZarrTileSource/compare/v0.1.1...HEAD
+[unreleased]: https://github.com/TissUUmaps/OMEZarrTileSource/compare/v0.1.2...HEAD
+[0.1.2]: https://github.com/TissUUmaps/OMEZarrTileSource/compare/v0.1.1...v0.1.2
 [0.1.1]: https://github.com/TissUUmaps/OMEZarrTileSource/compare/v0.0.3...v0.1.1
 [0.0.3]: https://github.com/TissUUmaps/OMEZarrTileSource/compare/v0.0.2...v0.0.3
 [0.0.2]: https://github.com/TissUUmaps/OMEZarrTileSource/compare/v0.0.1...v0.0.2
diff --git a/README.md b/README.md
index 389ff37..ff86ace 100644
--- a/README.md
+++ b/README.md
@@ -30,33 +30,39 @@ import { OMEZarrTileSource } from "omezarr-tilesource";
 
 const url = ...;
 
-// only necessary when using inline tile source configuration (see below)
+// configuration with URL (only works with zipped OME-Zarr URLs ending with .ozx)
+const tileSource1 = url;
+
+// inline configuration with options object (requires prior enabling, see below)
 OMEZarrTileSource.enable(OpenSeadragon);
+const tileSource2 = {
+    type: "ome-zarr",
+    url: url,
+    // zip: undefined,  // undefined = OME-Zarr ZIP auto-detection based on .ozx suffix
+    // t: undefined,
+    // c: undefined,
+    // z: undefined
+};
+
+// direct instantiation with URL (works with any OME-Zarr storage backend)
+const tileSource3 = new OMEZarrTileSource(url);
+
+// direct instantiation with options object (no prior enabling required)
+const tileSource4 = new OMEZarrTileSource({
+    url: url,
+    // zip: undefined,  // undefined = OME-Zarr ZIP auto-detection based on .ozx suffix
+    // t: undefined,
+    // c: undefined,
+    // z: undefined
+});
 
 const viewer = OpenSeadragon(
     ...
     tileSources: [
-        // configuration with a URL string (only works with OME-Zarr ZIP URLs ending with .ozx)
-        url,
-        // inline configuration with an options object (requires prior enabling, see above)
-        {
-            type: "ome-zarr",
-            url: url,
-            // zip: undefined,  // undefined = OME-Zarr ZIP auto-detection based on .ozx suffix
-            // t: undefined,
-            // c: undefined,
-            // z: undefined
-        },
-        // direct instantiation with a URL string (works with any OME-Zarr storage backend)
-        new OMEZarrTileSource(url),
-        // direct instantiation with an options object (no prior enabling required)
-        new OMEZarrTileSource({
-            url: url,
-            // zip: undefined,  // undefined = OME-Zarr ZIP auto-detection based on .ozx suffix
-            // t: undefined,
-            // c: undefined,
-            // z: undefined
-        })
+        tileSource1,
+        tileSource2,
+        tileSource3,
+        tileSource4
     ]
 );
 ```
diff --git a/index.html b/index.html
index b485df6..9fdc157 100644
--- a/index.html
+++ b/index.html
@@ -21,7 +21,8 @@ <h1>OMEZarrTileSource</h1>
         id: "viewer",
         tileSources: {
           type: "ome-zarr",
-          url: "https://storage.googleapis.com/jax-public-ngff/public/39287.zarr/0",
+          url: "https://livingobjects.ebi.ac.uk/idr/zarr/v0.5/idr0062A/6001240_labels.zarr",
+          z: 128,
         },
         prefixUrl: "https://openseadragon.github.io/openseadragon/images/",
         timeout: 60000, // increase timeout for large images,
diff --git a/package.json b/package.json
index 1e95ce3..402f982 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "omezarr-tilesource",
-  "version": "0.1.1",
+  "version": "0.1.2",
   "description": "An OpenSeadragon tile source for the OME-Zarr bioimage file format",
   "homepage": "https://github.com/TissUUmaps/OMEZarrTileSource#readme",
   "bugs": "https://github.com/TissUUmaps/OMEZarrTileSource/issues",
diff --git a/pnpm-workspace.yaml b/pnpm-workspace.yaml
index efc037a..09a02ca 100644
--- a/pnpm-workspace.yaml
+++ b/pnpm-workspace.yaml
@@ -1,2 +1,4 @@
+allowBuilds:
+  esbuild: true
 onlyBuiltDependencies:
   - esbuild
diff --git a/src/OMEZarrTileSource.ts b/src/OMEZarrTileSource.ts
index 66ef51b..7878945 100644
--- a/src/OMEZarrTileSource.ts
+++ b/src/OMEZarrTileSource.ts
@@ -313,19 +313,19 @@ export class OMEZarrTileSource extends OpenSeadragon.TileSource {
   private static _getMultiscale<T extends zarr.Readable>(
     group: zarr.Group<T>,
   ): { multiscale: Multiscale; omero?: Omero } {
-    if (!("ome" in group.attrs)) {
-      throw new Error("missing OME-Zarr metadata in attributes");
+    let metadata = group.attrs as Record<string, unknown>;
+    if ("ome" in metadata) {
+      metadata = metadata["ome"] as Record<string, unknown>;
     }
-    const ome = group.attrs["ome"] as Record<string, unknown>;
-    if (!("multiscales" in ome)) {
-      throw new Error("missing multiscales metadata in OME-Zarr metadata");
+    if (!("multiscales" in metadata)) {
+      throw new Error("missing OME-Zarr multiscales metadata");
     }
-    const multiscales = ome["multiscales"] as Multiscale[];
+    const multiscales = metadata["multiscales"] as Multiscale[];
     if (multiscales.length === 0) {
-      throw new Error("empty multiscales metadata in OME-Zarr metadata");
+      throw new Error("empty OME-Zarr multiscales metadata");
     }
     const multiscale = multiscales[0]!;
-    const omero = "omero" in ome ? (ome["omero"] as Omero) : undefined;
+    const omero = metadata["omero"] as Omero | undefined;
     return { multiscale, omero };
   }