diff --git a/vulkan/api/vulkan.api b/vulkan/api/vulkan.api
index 467ae7a..5a67d36 100644
--- a/vulkan/api/vulkan.api
+++ b/vulkan/api/vulkan.api
@@ -223,6 +223,9 @@
 
     //@extension("VK_KHR_swapchain")
     VK_IMAGE_LAYOUT_PRESENT_SRC_KHR                         = 1000001002,
+
+    //@extension("VK_KHR_shared_presentable_image")
+    VK_IMAGE_LAYOUT_SHARED_PRESENT_KHR                      = 1000111000,
 }
 
 enum VkAttachmentLoadOp {