diff --git a/README.md b/README.md
index 3b3f307..bc399d0 100644
--- a/README.md
+++ b/README.md
@@ -110,6 +110,15 @@ category_list.each_with_index do |category, index|
 end
 ```
 
+### Updating a category
+
+```ruby
+require('seatsio')
+client = Seatsio::Client.new(Seatsio::Region.EU(), "my-company-admin-key", "my-workspace-public-key")
+@seatsio.charts.update_category(chart_key: '<the chart key>', category_key: '<the category key>', label: "New label", color: "#bbbbbb", accessible: true)
+```
+
+
 ### Listing all charts
 
 ```ruby
diff --git a/lib/seatsio/charts.rb b/lib/seatsio/charts.rb
index 2f26cfb..b64a6f4 100644
--- a/lib/seatsio/charts.rb
+++ b/lib/seatsio/charts.rb
@@ -51,6 +51,14 @@ def list_categories(chart_key)
       Category.create_list(response['categories'])
     end
 
+    def update_category(chart_key:, category_key:, label: nil, color: nil, accessible: nil)
+      payload = {}
+      payload['label'] = label if label != nil
+      payload['color'] = color if color != nil
+      payload['accessible'] = accessible if accessible != nil
+      @http_client.post("/charts/#{chart_key}/categories/#{category_key}", payload)
+    end
+
     def add_tag(key, tag)
       @http_client.post("charts/#{key}/tags/#{CGI::escape(tag)}")
     end
diff --git a/test/charts/manage_categories_test.rb b/test/charts/manage_categories_test.rb
index a38644c..971806e 100644
--- a/test/charts/manage_categories_test.rb
+++ b/test/charts/manage_categories_test.rb
@@ -48,4 +48,18 @@ def test_list_categories
       assert_equal(categories[index]['key'], category.key)
     end
   end
+
+  def test_update_category
+    categories = [
+      { 'key' => 1, 'label' => 'Category 1', 'color' => '#aaaaaa', 'accessible' => false }
+    ]
+    chart = @seatsio.charts.create categories: categories
+
+    @seatsio.charts.update_category(chart_key: chart.key, category_key: 1, label: "New label", color: "#bbbbbb", accessible: true)
+
+    category_list = @seatsio.charts.list_categories(chart.key)
+    assert_equal(category_list[0].label, "New label")
+    assert_equal(category_list[0].color, "#bbbbbb")
+    assert_equal(category_list[0].accessible, true)
+  end
 end