diff --git a/Docs/MoltenVK_Runtime_UserGuide.md b/Docs/MoltenVK_Runtime_UserGuide.md
index 36329b5a4..ec1bf1518 100644
--- a/Docs/MoltenVK_Runtime_UserGuide.md
+++ b/Docs/MoltenVK_Runtime_UserGuide.md
@@ -314,6 +314,7 @@ In addition to core *Vulkan* functionality, **MoltenVK**  also supports the foll
 - `VK_KHR_bind_memory2`
 - `VK_KHR_buffer_device_address`
   - *Requires GPU Tier 2 argument buffers support.*
+- `VK_KHR_calibrated_timestamp`
 - `VK_KHR_copy_commands2`
 - `VK_KHR_create_renderpass2`
 - `VK_KHR_dedicated_allocation`
diff --git a/MoltenVK/MoltenVK/Layers/MVKExtensions.def b/MoltenVK/MoltenVK/Layers/MVKExtensions.def
index c9917b79a..c642da959 100644
--- a/MoltenVK/MoltenVK/Layers/MVKExtensions.def
+++ b/MoltenVK/MoltenVK/Layers/MVKExtensions.def
@@ -45,6 +45,7 @@ MVK_EXTENSION(KHR_16bit_storage,                      KHR_16BIT_STORAGE,
 MVK_EXTENSION(KHR_8bit_storage,                       KHR_8BIT_STORAGE,                       DEVICE,   10.11,  8.0,  1.0)
 MVK_EXTENSION(KHR_bind_memory2,                       KHR_BIND_MEMORY_2,                      DEVICE,   10.11,  8.0,  1.0)
 MVK_EXTENSION(KHR_buffer_device_address,              KHR_BUFFER_DEVICE_ADDRESS,              DEVICE,   13.0,  16.0,  1.0)
+MVK_EXTENSION(KHR_calibrated_timestamps,              KHR_CALIBRATED_TIMESTAMPS,              DEVICE,   10.15, 14.0,  1.0)
 MVK_EXTENSION(KHR_copy_commands2,                     KHR_COPY_COMMANDS_2,                    DEVICE,   10.11,  8.0,  1.0)
 MVK_EXTENSION(KHR_create_renderpass2,                 KHR_CREATE_RENDERPASS_2,                DEVICE,   10.11,  8.0,  1.0)
 MVK_EXTENSION(KHR_dedicated_allocation,               KHR_DEDICATED_ALLOCATION,               DEVICE,   10.11,  8.0,  1.0)
diff --git a/MoltenVK/MoltenVK/Vulkan/vulkan.mm b/MoltenVK/MoltenVK/Vulkan/vulkan.mm
index 1d228faf9..6f1436d2b 100644
--- a/MoltenVK/MoltenVK/Vulkan/vulkan.mm
+++ b/MoltenVK/MoltenVK/Vulkan/vulkan.mm
@@ -2875,6 +2875,13 @@ MVK_PUBLIC_VULKAN_SYMBOL VkResult vkSetPrivateData(
 MVK_PUBLIC_VULKAN_CORE_ALIAS(vkGetDeviceMemoryOpaqueCaptureAddress, KHR);
 
 
+#pragma mark -
+#pragma mark VK_KHR_calibrated_timestamps
+
+MVK_PUBLIC_VULKAN_ALIAS(vkGetCalibratedTimestampsKHR, vkGetCalibratedTimestampsEXT);
+MVK_PUBLIC_VULKAN_ALIAS(vkGetPhysicalDeviceCalibrateableTimeDomainsKHR, vkGetPhysicalDeviceCalibrateableTimeDomainsEXT);
+
+
 #pragma mark -
 #pragma mark VK_KHR_copy_commands2 extension