diff --git a/CHANGELOG.md b/CHANGELOG.md
index b397d3a..bd65184 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -17,3 +17,31 @@ All notable changes to `laravel-uppy-s3-multipart-upload` will be documented in
 
 - Add S3 transfer acceleration configuration
 - Update README
+
+## 0.3.1 - 2021-02-27
+
+- Move S3 transfer acceleration config to the package config file
+
+## 0.3.2 - 2021-02-28
+
+- Update the way credentials are passed to use the Credentials class
+
+## 0.3.3 - 2021-03-03
+
+- Remove passing credentials, assuming that AWS_ACCESS_KEY_ID and AWS_SECRET_ACCESS_KEY are set in the .env based on the AWS SDK suggestions
+
+## 0.3.4 - 2021-03-18
+
+- Use Flysystem AWS client
+
+## 0.3.5 - 2021-09-15
+
+- Add support for multiple Uppy instances
+- Update README
+
+## 0.4 - 2021-09-20
+
+- Upgrade Uppy from 1.x to 2.0
+- Add support for pre-sign URLs in batches
+- Update README
+- Add upgrade guide
diff --git a/README.md b/README.md
index 60c3afc..d6d8632 100644
--- a/README.md
+++ b/README.md
@@ -50,10 +50,10 @@ Add on your `package.json` file the Uppy JS libraries and AlpineJS library:
         ...
     },
     "dependencies": {
-        "@uppy/aws-s3-multipart": "^1.8.12",
-        "@uppy/core": "^1.16.0",
-        "@uppy/drag-drop": "^1.4.24",
-        "@uppy/status-bar": "^1.9.0",
+        "@uppy/aws-s3-multipart": "^2.0.2",
+        "@uppy/core": "^2.0.2",
+        "@uppy/drag-drop": "^2.0.1",
+        "@uppy/status-bar": "^2.0.1"
         ...
     }
     ...
diff --git a/UPGRADE.md b/UPGRADE.md
new file mode 100644
index 0000000..7c693a8
--- /dev/null
+++ b/UPGRADE.md
@@ -0,0 +1,31 @@
+# Upgrade Guide
+
+## Upgrading from 0.3.5 to 0.4.0
+
+### To upgrade Uppy from 1.x to 2.0
+
+Update the following dependencies on your `package.json`:
+
+```json
+"dependencies": {
+    ...
+    "@uppy/aws-s3-multipart": "^2.0.2",
+    "@uppy/core": "^2.0.2",
+    "@uppy/drag-drop": "^2.0.1",
+    "@uppy/status-bar": "^2.0.1"
+}
+```
+
+Install the dependencies and compile assets:
+
+```bash
+npm install
+npm run dev
+```
+
+Clear caches:
+
+```bash
+php artisan optimize
+php artisan view:clear
+```
diff --git a/routes/web.php b/routes/web.php
index 3009854..4312a70 100644
--- a/routes/web.php
+++ b/routes/web.php
@@ -9,7 +9,7 @@
 
 Route::get('/s3/multipart/{uploadId}', [UppyS3MultipartController::class, 'getUploadedParts']);
 
-Route::get('/s3/multipart/{uploadId}/{partNumber}', [UppyS3MultipartController::class, 'prepareUploadPart']);
+Route::get('/s3/multipart/{uploadId}/batch', [UppyS3MultipartController::class, 'prepareUploadParts']);
 
 Route::post('/s3/multipart/{uploadId}/complete', [UppyS3MultipartController::class, 'completeMultipartUpload']);
 
diff --git a/src/Http/Controllers/UppyS3MultipartController.php b/src/Http/Controllers/UppyS3MultipartController.php
index baef2ec..b458c7c 100644
--- a/src/Http/Controllers/UppyS3MultipartController.php
+++ b/src/Http/Controllers/UppyS3MultipartController.php
@@ -201,28 +201,32 @@ private function listPartsPage($key, $uploadId, $partIndex, $parts = null)
 
             https://github.com/transloadit/uppy/blob/master/packages/%40uppy/aws-s3-multipart/src/index.js#L104
 
-            return this.client.get(`s3/multipart/${uploadId}/${number}?key=${filename}`)
+            return this.client.get(`s3/multipart/${uploadId}/batch?key=${filename}&partNumbers=${partNumbers.join(',')}`)
             .then(assertServerError)
     */
-    public function prepareUploadPart(Request $request, $uploadId, $partNumber)
+    public function prepareUploadParts(Request $request, $uploadId)
     {
         $key = $this->encodeURIComponent($request->input('key'));
 
-        $command = $this->client->getCommand('uploadPart', [
-            'Bucket'     => $this->bucket,
-            'Key'        => $key,
-            'UploadId'   => $uploadId,
-            'PartNumber' => $partNumber,
-            'Body'       => '',
-        ]);
+        $partNumbers = explode(',', $request->input('partNumbers'));
+
+        $presignedUrls = [];
 
-        $presignedRequest = $this->client->createPresignedRequest($command, config('uppy-s3-multipart-upload.s3.presigned_url.expiry_time'));
+        foreach ($partNumbers as $partNumber) {
+            $command = $this->client->getCommand('uploadPart', [
+                'Bucket'     => $this->bucket,
+                'Key'        => $key,
+                'UploadId'   => $uploadId,
+                'PartNumber' => (int) $partNumber,
+                'Body'       => '',
+            ]);
 
-        $presignedUrl = (string) $presignedRequest->getUri();
+            $presignedUrls[$partNumber] = (string) $this->client->createPresignedRequest($command, config('uppy-s3-multipart-upload.s3.presigned_url.expiry_time'))->getUri();
+        }
 
         return response()
             ->json([
-                'url' => $presignedUrl,
+                'presignedUrls' => $presignedUrls,
             ]);
     }