diff --git a/Changelog.md b/Changelog.md
index 0e42bd4..fd787ec 100644
--- a/Changelog.md
+++ b/Changelog.md
@@ -18,6 +18,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Update Vulkan-Headers to 1.3.219 (#605, #608, #619)
 - Added `VK_EXT_sample_locations` device extension (#616)
 - Added `VK_NV_coverage_reduction_mode` device extension (#617)
+- Added `VK_KHR_ray_tracing_maintenance1` device extension (#620)
 - Added new functions to `VK_KHR_swapchain`, available since Vulkan 1.1 (#629)
 - Added `VK_KHR_device_group_creation` instance extension (#630)
 - Added `VK_KHR_device_group` device extension (#631)
diff --git a/ash/src/extensions/khr/mod.rs b/ash/src/extensions/khr/mod.rs
index babb062..ea809b4 100644
--- a/ash/src/extensions/khr/mod.rs
+++ b/ash/src/extensions/khr/mod.rs
@@ -25,6 +25,7 @@ pub use self::maintenance4::Maintenance4;
 pub use self::pipeline_executable_properties::PipelineExecutableProperties;
 pub use self::present_wait::PresentWait;
 pub use self::push_descriptor::PushDescriptor;
+pub use self::ray_tracing_maintenance1::RayTracingMaintenance1;
 pub use self::ray_tracing_pipeline::RayTracingPipeline;
 pub use self::surface::Surface;
 pub use self::swapchain::Swapchain;
@@ -62,6 +63,7 @@ mod maintenance4;
 mod pipeline_executable_properties;
 mod present_wait;
 mod push_descriptor;
+mod ray_tracing_maintenance1;
 mod ray_tracing_pipeline;
 mod surface;
 mod swapchain;
diff --git a/ash/src/extensions/khr/ray_tracing_maintenance1.rs b/ash/src/extensions/khr/ray_tracing_maintenance1.rs
new file mode 100644
index 0000000..a5159ad
--- /dev/null
+++ b/ash/src/extensions/khr/ray_tracing_maintenance1.rs
@@ -0,0 +1,42 @@
+use crate::vk;
+use crate::{Device, Instance};
+use std::ffi::CStr;
+use std::mem;
+
+/// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/VK_KHR_ray_tracing_maintenance1.html>
+#[derive(Clone)]
+pub struct RayTracingMaintenance1 {
+    fp: vk::KhrRayTracingMaintenance1Fn,
+}
+
+impl RayTracingMaintenance1 {
+    pub fn new(instance: &Instance, device: &Device) -> Self {
+        let handle = device.handle();
+        let fp = vk::KhrRayTracingMaintenance1Fn::load(|name| unsafe {
+            mem::transmute(instance.get_device_proc_addr(handle, name.as_ptr()))
+        });
+        Self { fp }
+    }
+
+    /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkCmdTraceRaysIndirect2KHR.html>
+    ///
+    /// `indirect_device_address` is a buffer device address which is a pointer to a [`vk::TraceRaysIndirectCommand2KHR`] structure containing the trace ray parameters.
+    #[inline]
+    pub unsafe fn cmd_trace_rays_indirect2(
+        &self,
+        command_buffer: vk::CommandBuffer,
+        indirect_device_address: vk::DeviceAddress,
+    ) {
+        (self.fp.cmd_trace_rays_indirect2_khr)(command_buffer, indirect_device_address);
+    }
+
+    #[inline]
+    pub const fn name() -> &'static CStr {
+        vk::KhrRayTracingMaintenance1Fn::name()
+    }
+
+    #[inline]
+    pub fn fp(&self) -> &vk::KhrRayTracingMaintenance1Fn {
+        &self.fp
+    }
+}
diff --git a/ash/src/extensions/khr/ray_tracing_pipeline.rs b/ash/src/extensions/khr/ray_tracing_pipeline.rs
index 0661fb5..9d367e5 100644
--- a/ash/src/extensions/khr/ray_tracing_pipeline.rs
+++ b/ash/src/extensions/khr/ray_tracing_pipeline.rs
@@ -122,6 +122,8 @@ impl RayTracingPipeline {
     }
 
     /// <https://www.khronos.org/registry/vulkan/specs/1.3-extensions/man/html/vkCmdTraceRaysIndirectKHR.html>
+    ///
+    /// `indirect_device_address` is a buffer device address which is a pointer to a [`vk::TraceRaysIndirectCommandKHR`] structure containing the trace ray parameters.
     pub unsafe fn cmd_trace_rays_indirect(
         &self,
         command_buffer: vk::CommandBuffer,