diff --git a/src/Client.php b/src/Client.php
index 3344115..c7afb62 100644
--- a/src/Client.php
+++ b/src/Client.php
@@ -48,13 +48,23 @@ class Client
         return json_decode($data->getBody()->getContents(), true);
     }
 
-    public function put(string $url, array $data)
+    public function put(string $url, array $data): void
     {
         $this->client->put($url, [
             RequestOptions::JSON => $data,
         ]);
     }
 
+    public function putFile(string $url, string $image): void
+    {
+        $this->client->put($url, [
+            RequestOptions::BODY => $image,
+            RequestOptions::HEADERS => [
+                'Content-Type' => 'application/octet-stream'
+            ],
+        ]);
+    }
+
     public function get(string $url, array $parameters = []): array
     {
         $data = $this->client->get($url, [
diff --git a/src/GrocyClient.php b/src/GrocyClient.php
index d191265..79d7f95 100644
--- a/src/GrocyClient.php
+++ b/src/GrocyClient.php
@@ -87,6 +87,11 @@ class GrocyClient
         ]);
     }
 
+    public function uploadPicture(string $fileName, string $image, string $group = 'productpictures')
+    {
+        $this->client->putFile(sprintf('files/%s/%s', $group, base64_encode($fileName)), $image);
+    }
+
     public function getStockClient(): StockClient
     {
         return new StockClient($this->client);
diff --git a/src/Objects/ProductsObject.php b/src/Objects/ProductsObject.php
index 63b9616..e1217ab 100644
--- a/src/Objects/ProductsObject.php
+++ b/src/Objects/ProductsObject.php
@@ -8,7 +8,7 @@ class ProductsObject extends AbstractApiObject
 {
     private string $name;
 
-    private string $description;
+    private ?string $description;
 
     private int $min_stock_amount = 0;
 
@@ -20,8 +20,10 @@ class ProductsObject extends AbstractApiObject
 
     private int $qu_factor_purchase_to_stock;
 
+    private ?string $picture_file_name;
+
     #[Ignore]
-    private array $userfields;
+    private array $userfields = [];
 
     public static function getEntity(): string
     {
@@ -48,19 +50,19 @@ class ProductsObject extends AbstractApiObject
     }
 
     /**
-     * @return string
+     * @return string|null
      */
-    public function getDescription(): string
+    public function getDescription(): ?string
     {
         return $this->description;
     }
 
     /**
-     * @param string $description
+     * @param string|null $description
      *
      * @return ProductsObject
      */
-    public function setDescription(string $description): ProductsObject
+    public function setDescription(?string $description): ProductsObject
     {
         $this->description = $description;
         return $this;
@@ -93,6 +95,7 @@ class ProductsObject extends AbstractApiObject
         return $this->userfields;
     }
 
+    #[Ignore]
     public function getPicnicId(): ?int
     {
         return $this->getUserfields()['picnic'] ?? null;
@@ -184,4 +187,23 @@ class ProductsObject extends AbstractApiObject
         $this->qu_factor_purchase_to_stock = $qu_factor_purchase_to_stock;
         return $this;
     }
+
+    /**
+     * @return string|null
+     */
+    public function getPictureFileName(): ?string
+    {
+        return $this->picture_file_name;
+    }
+
+    /**
+     * @param string|null $picture_file_name
+     *
+     * @return ProductsObject
+     */
+    public function setPictureFileName(?string $picture_file_name): ProductsObject
+    {
+        $this->picture_file_name = $picture_file_name;
+        return $this;
+    }
 }
\ No newline at end of file