diff --git a/Docs/MoltenVK_Runtime_UserGuide.md b/Docs/MoltenVK_Runtime_UserGuide.md
index 68ed658..becec32 100644
--- a/Docs/MoltenVK_Runtime_UserGuide.md
+++ b/Docs/MoltenVK_Runtime_UserGuide.md
@@ -273,6 +273,7 @@
 - `VK_KHR_maintenance2`
 - `VK_KHR_maintenance3`
 - `VK_KHR_multiview`
+- `VK_KHR_portability_subset`
 - `VK_KHR_push_descriptor`
 - `VK_KHR_relaxed_block_layout`
 - `VK_KHR_sampler_mirror_clamp_to_edge` *(macOS)*
@@ -302,7 +303,6 @@
 - `VK_EXT_swapchain_colorspace`
 - `VK_EXT_vertex_attribute_divisor`
 - `VK_EXT_texel_buffer_alignment` *(requires Metal 2.0)*
-- `VK_EXTX_portability_subset`
 - `VK_MVK_ios_surface` *(iOS) (Obsolete. Use `VK_EXT_metal_surface` instead.)*
 - `VK_MVK_macos_surface` *(macOS) (Obsolete. Use `VK_EXT_metal_surface` instead.)*
 - `VK_MVK_moltenvk`
diff --git a/Docs/Whats_New.md b/Docs/Whats_New.md
index b34e5a7..9eb11bf 100644
--- a/Docs/Whats_New.md
+++ b/Docs/Whats_New.md
@@ -25,6 +25,7 @@
 	- A feature struct for `VK_KHR_shader_draw_parameters`
 	- All extensions that were promoted to core in Vulkan 1.1
 - Add support for extensions:
+	- `VK_KHR_portability_subset`
 	- `VK_KHR_create_renderpass2`
 	- `VK_KHR_external_fence` (non-functional groundwork for future extensions,
 	  including support for GCD and Mach semaphores)
@@ -35,6 +36,7 @@
 	- `VK_KHR_external_semaphore_capabilities` (non-functional groundwork for
 	  future `MTLSharedEvent` Vulkan extension)
 	- `VK_KHR_multiview`
+- Remove support for obsolete `VK_EXTX_portability_subset` extension.
 - Improve performance of tessellation control pipeline stage by processing multiple 
   patches per workgroup.
 - `vkCmdBindDescriptorSets` order `pDynamicOffsets` by descriptor binding number 
diff --git a/ExternalRevisions/Vulkan-Headers_repo_revision b/ExternalRevisions/Vulkan-Headers_repo_revision
index d347369..77ca791 100644
--- a/ExternalRevisions/Vulkan-Headers_repo_revision
+++ b/ExternalRevisions/Vulkan-Headers_repo_revision
@@ -1 +1 @@
-83825d55c7d522931124696ecb07ed48f2693e5c
+7f9879b1b1fab53f719a9ed5e6e29533b10972b2
diff --git a/ExternalRevisions/Vulkan-Portability_repo_revision b/ExternalRevisions/Vulkan-Portability_repo_revision
deleted file mode 100644
index 3a9f9eb..0000000
--- a/ExternalRevisions/Vulkan-Portability_repo_revision
+++ /dev/null
@@ -1 +0,0 @@
-53be040f04ce55463d0e5b25fd132f45f003e903
diff --git a/MoltenVK/MoltenVK.xcodeproj/project.pbxproj b/MoltenVK/MoltenVK.xcodeproj/project.pbxproj
index ff8d573..a8dc7f2 100644
--- a/MoltenVK/MoltenVK.xcodeproj/project.pbxproj
+++ b/MoltenVK/MoltenVK.xcodeproj/project.pbxproj
@@ -571,7 +571,6 @@
 		A9E53DFE21064F84002781DD /* MTLRenderPipelineDescriptor+MoltenVK.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = "MTLRenderPipelineDescriptor+MoltenVK.h"; sourceTree = "<group>"; };
 		A9F0429D1FB4CF82009FCCB8 /* MVKCommonEnvironment.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MVKCommonEnvironment.h; sourceTree = "<group>"; };
 		A9F0429E1FB4CF82009FCCB8 /* MVKLogging.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MVKLogging.h; sourceTree = "<group>"; };
-		A9F2559121F96814008C7785 /* vulkan-portability */ = {isa = PBXFileReference; lastKnownFileType = folder; path = "vulkan-portability"; sourceTree = "<group>"; };
 		A9F3D9D924732A4C00745190 /* MVKSmallVectorAllocator.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MVKSmallVectorAllocator.h; sourceTree = "<group>"; };
 		A9F3D9DB24732A4D00745190 /* MVKSmallVector.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; path = MVKSmallVector.h; sourceTree = "<group>"; };
 /* End PBXFileReference section */
@@ -750,7 +749,6 @@
 			isa = PBXGroup;
 			children = (
 				A9AD67C72054DD6C00ED3C08 /* vulkan */,
-				A9F2559121F96814008C7785 /* vulkan-portability */,
 			);
 			path = include;
 			sourceTree = "<group>";
diff --git a/MoltenVK/MoltenVK/API/mvk_vulkan.h b/MoltenVK/MoltenVK/API/mvk_vulkan.h
index 757bb7e..f234ead 100644
--- a/MoltenVK/MoltenVK/API/mvk_vulkan.h
+++ b/MoltenVK/MoltenVK/API/mvk_vulkan.h
@@ -35,6 +35,8 @@
 
 #define VK_USE_PLATFORM_METAL_EXT				1
 
+#define VK_ENABLE_BETA_EXTENSIONS				1		// VK_KHR_portability_subset
+
 #ifdef __IPHONE_OS_VERSION_MAX_ALLOWED
 #	define VK_USE_PLATFORM_IOS_MVK				1
 #endif
@@ -44,6 +46,5 @@
 #endif
 
 #include <vulkan/vulkan.h>
-#include <vulkan-portability/vk_extx_portability_subset.h>
 
 #endif
diff --git a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.h b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.h
index 23d74f5..e3013e1 100644
--- a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.h
+++ b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.h
@@ -362,7 +362,6 @@
 	void initPipelineCacheUUID();
 	uint32_t getHighestMTLFeatureSet();
 	uint64_t getMoltenVKGitRevision();
-	bool getImageViewIsSupported(const VkPhysicalDeviceImageFormatInfo2 *pImageFormatInfo);
 	void populate(VkPhysicalDeviceIDProperties* pDevIdProps);
 	void logGPUInfo();
 
@@ -678,7 +677,7 @@
 	const VkPhysicalDeviceScalarBlockLayoutFeaturesEXT _enabledScalarLayoutFeatures;
 	const VkPhysicalDeviceTexelBufferAlignmentFeaturesEXT _enabledTexelBuffAlignFeatures;
 	const VkPhysicalDeviceVertexAttributeDivisorFeaturesEXT _enabledVtxAttrDivFeatures;
-	const VkPhysicalDevicePortabilitySubsetFeaturesEXTX _enabledPortabilityFeatures;
+	const VkPhysicalDevicePortabilitySubsetFeaturesKHR _enabledPortabilityFeatures;
 
 	/** The list of Vulkan extensions, indicating whether each has been enabled by the app for this device. */
 	const MVKExtensionList _enabledExtensions;
diff --git a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
index 83add58..57d904b 100644
--- a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
+++ b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
@@ -164,13 +164,24 @@
 				divisorFeatures->vertexAttributeInstanceRateZeroDivisor = true;
 				break;
 			}
-			case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PORTABILITY_SUBSET_FEATURES_EXTX: {
-				auto* portabilityFeatures = (VkPhysicalDevicePortabilitySubsetFeaturesEXTX*)next;
-				portabilityFeatures->triangleFans = false;
-				portabilityFeatures->separateStencilMaskRef = true;
+			case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PORTABILITY_SUBSET_FEATURES_KHR: {
+				auto* portabilityFeatures = (VkPhysicalDevicePortabilitySubsetFeaturesKHR*)next;
+				portabilityFeatures->constantAlphaColorBlendFactors = true;
 				portabilityFeatures->events = true;
-				portabilityFeatures->standardImageViews = _mvkInstance->getMoltenVKConfiguration()->fullImageViewSwizzle || _metalFeatures.nativeTextureSwizzle;
+				portabilityFeatures->imageViewFormatReinterpretation = true;
+				portabilityFeatures->imageViewFormatSwizzle = (_metalFeatures.nativeTextureSwizzle ||
+															   _mvkInstance->getMoltenVKConfiguration()->fullImageViewSwizzle);
+				portabilityFeatures->imageView2DOn3DImage = false;
+				portabilityFeatures->multisampleArrayImage = _metalFeatures.multisampleArrayTextures;
+				portabilityFeatures->mutableComparisonSamplers = _metalFeatures.depthSampleCompare;
+				portabilityFeatures->pointPolygons = false;
 				portabilityFeatures->samplerMipLodBias = false;
+				portabilityFeatures->separateStencilMaskRef = true;
+				portabilityFeatures->shaderSampleRateInterpolationFunctions = false;
+				portabilityFeatures->tessellationIsolines = false;
+				portabilityFeatures->tessellationPointMode = false;
+				portabilityFeatures->triangleFans = false;
+				portabilityFeatures->vertexAttributeAccessBeyondStride = true;	// Costs additional buffers. Should make configuration switch.
 				break;
 			}
 			case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_SHADER_INTEGER_FUNCTIONS_2_FEATURES_INTEL: {
@@ -298,8 +309,8 @@
 				divisorProps->maxVertexAttribDivisor = kMVKUndefinedLargeUInt32;
 				break;
 			}
-			case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PORTABILITY_SUBSET_PROPERTIES_EXTX: {
-				auto* portabilityProps = (VkPhysicalDevicePortabilitySubsetPropertiesEXTX*)next;
+			case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PORTABILITY_SUBSET_PROPERTIES_KHR: {
+				auto* portabilityProps = (VkPhysicalDevicePortabilitySubsetPropertiesKHR*)next;
 				portabilityProps->minVertexInputBindingStrideAlignment = (uint32_t)_metalFeatures.vertexStrideAlignment;
 				break;
 			}
@@ -542,52 +553,12 @@
 
 	if ( !_pixelFormats.isSupported(pImageFormatInfo->format) ) { return VK_ERROR_FORMAT_NOT_SUPPORTED; }
 
-	if ( !getImageViewIsSupported(pImageFormatInfo) ) { return VK_ERROR_FORMAT_NOT_SUPPORTED; }
-
 	return getImageFormatProperties(pImageFormatInfo->format, pImageFormatInfo->type,
 									pImageFormatInfo->tiling, pImageFormatInfo->usage,
 									pImageFormatInfo->flags,
 									&pImageFormatProperties->imageFormatProperties);
 }
 
-// If the image format info links portability image view info, test if an image view of that configuration is supported
-bool MVKPhysicalDevice::getImageViewIsSupported(const VkPhysicalDeviceImageFormatInfo2 *pImageFormatInfo) {
-	for (const auto* next = (VkBaseInStructure*)pImageFormatInfo->pNext; next; next = next->pNext) {
-		switch ((uint32_t)next->sType) {
-			case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_IMAGE_VIEW_SUPPORT_EXTX: {
-				auto* portImgViewInfo = (VkPhysicalDeviceImageViewSupportEXTX*)next;
-
-				// Create an image view and test whether it could be configured
-				VkImageViewCreateInfo viewInfo = {
-					.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO,
-					.pNext = portImgViewInfo->pNext,
-					.flags = portImgViewInfo->flags,
-					.image = nullptr,
-					.viewType = portImgViewInfo->viewType,
-					.format = portImgViewInfo->format,
-					.components = portImgViewInfo->components,
-					.subresourceRange = {
-						.aspectMask = portImgViewInfo->aspectMask,
-						.baseMipLevel = 0,
-						.levelCount = 1,
-						.baseArrayLayer = 0,
-						.layerCount = 1},
-				};
-                MTLPixelFormat mtlPixFmt = _pixelFormats.getMTLPixelFormat(viewInfo.format);
-				bool useSwizzle;
-				return (MVKImageView::validateSwizzledMTLPixelFormat(&viewInfo, this,
-																	 _metalFeatures.nativeTextureSwizzle,
-																	 _mvkInstance->getMoltenVKConfiguration()->fullImageViewSwizzle,
-																	 mtlPixFmt, useSwizzle) == VK_SUCCESS);
-			}
-			default:
-				break;
-		}
-	}
-
-	return true;
-}
-
 void MVKPhysicalDevice::getExternalBufferProperties(const VkPhysicalDeviceExternalBufferInfo* pExternalBufferInfo,
 													VkExternalBufferProperties* pExternalBufferProperties) {
 	pExternalBufferProperties->externalMemoryProperties = getExternalBufferProperties(pExternalBufferInfo->handleType);
@@ -3171,8 +3142,8 @@
 	mvkClear(&_enabledPortabilityFeatures);
 
 	// Fetch the available physical device features.
-	VkPhysicalDevicePortabilitySubsetFeaturesEXTX pdPortabilityFeatures;
-	pdPortabilityFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PORTABILITY_SUBSET_FEATURES_EXTX;
+	VkPhysicalDevicePortabilitySubsetFeaturesKHR pdPortabilityFeatures;
+	pdPortabilityFeatures.sType = VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PORTABILITY_SUBSET_FEATURES_KHR;
 	pdPortabilityFeatures.pNext = NULL;
 
 	VkPhysicalDeviceVertexAttributeDivisorFeaturesEXT pdVtxAttrDivFeatures;
@@ -3318,11 +3289,11 @@
 							   &pdVtxAttrDivFeatures.vertexAttributeInstanceRateDivisor, 2);
 				break;
 			}
-			case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PORTABILITY_SUBSET_FEATURES_EXTX: {
-				auto* requestedFeatures = (VkPhysicalDevicePortabilitySubsetFeaturesEXTX*)next;
+			case VK_STRUCTURE_TYPE_PHYSICAL_DEVICE_PORTABILITY_SUBSET_FEATURES_KHR: {
+				auto* requestedFeatures = (VkPhysicalDevicePortabilitySubsetFeaturesKHR*)next;
 				enableFeatures(&_enabledPortabilityFeatures.triangleFans,
 							   &requestedFeatures->triangleFans,
-							   &pdPortabilityFeatures.triangleFans, 5);
+							   &pdPortabilityFeatures.triangleFans, 15);
 				break;
 			}
 			default:
diff --git a/MoltenVK/MoltenVK/Layers/MVKExtensions.def b/MoltenVK/MoltenVK/Layers/MVKExtensions.def
index cbb1f16..805c7ac 100644
--- a/MoltenVK/MoltenVK/Layers/MVKExtensions.def
+++ b/MoltenVK/MoltenVK/Layers/MVKExtensions.def
@@ -62,6 +62,7 @@
 MVK_EXTENSION(KHR_maintenance2, KHR_MAINTENANCE2, DEVICE)
 MVK_EXTENSION(KHR_maintenance3, KHR_MAINTENANCE3, DEVICE)
 MVK_EXTENSION(KHR_multiview, KHR_MULTIVIEW, DEVICE)
+MVK_EXTENSION(KHR_portability_subset, KHR_PORTABILITY_SUBSET, DEVICE)
 MVK_EXTENSION(KHR_push_descriptor, KHR_PUSH_DESCRIPTOR, DEVICE)
 MVK_EXTENSION(KHR_relaxed_block_layout, KHR_RELAXED_BLOCK_LAYOUT, DEVICE)
 MVK_EXTENSION(KHR_sampler_mirror_clamp_to_edge, KHR_SAMPLER_MIRROR_CLAMP_TO_EDGE, DEVICE)
@@ -92,7 +93,6 @@
 MVK_EXTENSION(EXT_swapchain_colorspace, EXT_SWAPCHAIN_COLOR_SPACE, INSTANCE)
 MVK_EXTENSION(EXT_texel_buffer_alignment, EXT_TEXEL_BUFFER_ALIGNMENT, DEVICE)
 MVK_EXTENSION(EXT_vertex_attribute_divisor, EXT_VERTEX_ATTRIBUTE_DIVISOR, DEVICE)
-MVK_EXTENSION(EXTX_portability_subset, EXTX_PORTABILITY_SUBSET, DEVICE)
 MVK_EXTENSION(MVK_ios_surface, MVK_IOS_SURFACE, INSTANCE)
 MVK_EXTENSION(MVK_macos_surface, MVK_MACOS_SURFACE, INSTANCE)
 MVK_EXTENSION(MVK_moltenvk, MVK_MOLTENVK, INSTANCE)
diff --git a/MoltenVK/include/vulkan-portability b/MoltenVK/include/vulkan-portability
deleted file mode 120000
index cfe721d..0000000
--- a/MoltenVK/include/vulkan-portability
+++ /dev/null
@@ -1 +0,0 @@
-../../External/Vulkan-Portability/include/vulkan
\ No newline at end of file
diff --git a/fetchDependencies b/fetchDependencies
index 583993a..d6602d5 100755
--- a/fetchDependencies
+++ b/fetchDependencies
@@ -256,18 +256,6 @@
 	update_repo ${REPO_NAME} ${REPO_URL} ${REPO_REV}
 fi
 
-# ----------------- Vulkan-Portability -------------------
-
-echo
-echo ========== Vulkan-Portability ==========
-echo
-
-REPO_NAME=Vulkan-Portability
-REPO_URL="https://github.com/KhronosGroup/${REPO_NAME}.git"
-REPO_REV=$(cat "${EXT_REV_DIR}/${REPO_NAME}_repo_revision")
-
-update_repo ${REPO_NAME} ${REPO_URL} ${REPO_REV}
-
 
 # ----------------- SPIRV-Cross -------------------