diff --git a/.github/workflows/CI.yml b/.github/workflows/CI.yml
index 3ae3d1424..9ee53ee47 100644
--- a/.github/workflows/CI.yml
+++ b/.github/workflows/CI.yml
@@ -39,6 +39,11 @@ jobs:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v3
 
+      # Python 3.12 removed distutils, which is used by glslang::update_glslang_sources.py called from fetchDependencies
+      - uses: actions/setup-python@v4
+        with:
+          python-version: '3.11'
+
       - name: Select Xcode version
         run: sudo xcode-select -switch "${XCODE_DEV_PATH}"
 
diff --git a/Docs/Whats_New.md b/Docs/Whats_New.md
index ff09d596c..f69d42033 100644
--- a/Docs/Whats_New.md
+++ b/Docs/Whats_New.md
@@ -19,6 +19,8 @@ MoltenVK 1.2.7
 Released TBD
 
 - Reduce disk space consumed after running `fetchDependencies` script by removing intermediate file caches.
+- Update to latest SPIRV-Cross:
+  - MSL: Fix regression error in argument buffer runtime arrays.
 
 
 
@@ -61,6 +63,7 @@ MoltenVK 1.2.5
 Released 2023/08/15
 
 - Add support for extensions:
+	- `VK_KHR_deferred_host_operations`
 	- `VK_KHR_incremental_present`
 	- `VK_KHR_shader_non_semantic_info`
 	- `VK_EXT_4444_formats`
diff --git a/ExternalRevisions/SPIRV-Cross_repo_revision b/ExternalRevisions/SPIRV-Cross_repo_revision
index fa4ca5201..9f5795606 100644
--- a/ExternalRevisions/SPIRV-Cross_repo_revision
+++ b/ExternalRevisions/SPIRV-Cross_repo_revision
@@ -1 +1 @@
-2de1265fca722929785d9acdec4ab728c47a0254
+4818f7e7ef7b7078a3a7a5a52c4a338e0dda22f4
diff --git a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
index 7d342f689..99ac0ef35 100644
--- a/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
+++ b/MoltenVK/MoltenVK/GPUObjects/MVKDevice.mm
@@ -2208,6 +2208,8 @@
 
 	if ([_mtlDevice respondsToSelector: @selector(argumentBuffersSupport)]) {
 		_metalFeatures.argumentBuffersTier = _mtlDevice.argumentBuffersSupport;
+	} else {
+		_metalFeatures.argumentBuffersTier = MTLArgumentBuffersTier1;
 	}
 
 #define checkSupportsMTLCounterSamplingPoint(mtlSP, mvkSP)  \
diff --git a/MoltenVKShaderConverter/MoltenVKShaderConverter.xcodeproj/xcshareddata/xcschemes/MoltenVKShaderConverter.xcscheme b/MoltenVKShaderConverter/MoltenVKShaderConverter.xcodeproj/xcshareddata/xcschemes/MoltenVKShaderConverter.xcscheme
index eeee1a626..9f64b980d 100644
--- a/MoltenVKShaderConverter/MoltenVKShaderConverter.xcodeproj/xcshareddata/xcschemes/MoltenVKShaderConverter.xcscheme
+++ b/MoltenVKShaderConverter/MoltenVKShaderConverter.xcodeproj/xcshareddata/xcschemes/MoltenVKShaderConverter.xcscheme
@@ -97,7 +97,7 @@
             isEnabled = "NO">
          </CommandLineArgument>
          <CommandLineArgument
-            argument = "2.4"
+            argument = "3.1"
             isEnabled = "NO">
          </CommandLineArgument>
          <CommandLineArgument
diff --git a/MoltenVKShaderConverter/MoltenVKShaderConverterTool/MoltenVKShaderConverterTool.cpp b/MoltenVKShaderConverter/MoltenVKShaderConverterTool/MoltenVKShaderConverterTool.cpp
index 2eb1c48c8..cd4e2bb1f 100644
--- a/MoltenVKShaderConverter/MoltenVKShaderConverterTool/MoltenVKShaderConverterTool.cpp
+++ b/MoltenVKShaderConverter/MoltenVKShaderConverterTool/MoltenVKShaderConverterTool.cpp
@@ -220,7 +220,8 @@ bool MoltenVKShaderConverterTool::convertSPIRV(const vector<uint32_t>& spv,
 	mslContext.options.shouldFlipVertexY = _shouldFlipVertexY;
 	mslContext.options.mslOptions.argument_buffers = _useMetalArgumentBuffers;
 	mslContext.options.mslOptions.force_active_argument_buffer_resources = _useMetalArgumentBuffers;
-	mslContext.options.mslOptions.pad_argument_buffer_resources = _useMetalArgumentBuffers;
+	mslContext.options.mslOptions.pad_argument_buffer_resources = false;
+	mslContext.options.mslOptions.argument_buffers_tier = SPIRV_CROSS_NAMESPACE::CompilerMSL::Options::ArgumentBuffersTier::Tier2;
 	mslContext.options.mslOptions.replace_recursive_inputs = mvkOSVersionIsAtLeast(14.0, 17.0, 1.0);
 
 	SPIRVToMSLConverter spvConverter;
@@ -425,7 +426,10 @@ MoltenVKShaderConverterTool::MoltenVKShaderConverterTool(int argc, const char* a
 	_quietMode = false;
 	_useMetalArgumentBuffers = false;
 
-	if (mvkOSVersionIsAtLeast(13.0)) {
+	if (mvkOSVersionIsAtLeast(14.0)) {
+		_mslVersionMajor = 3;
+		_mslVersionMinor = 1;
+	} else 	if (mvkOSVersionIsAtLeast(13.0)) {
 		_mslVersionMajor = 3;
 		_mslVersionMinor = 0;
 	} else if (mvkOSVersionIsAtLeast(12.0)) {
diff --git a/Scripts/runcts b/Scripts/runcts
index 73aee7c6d..dfac7a135 100755
--- a/Scripts/runcts
+++ b/Scripts/runcts
@@ -122,8 +122,12 @@ start_time=${SECONDS}
 
 "${cts_vk_dir}/deqp-vk"                    \
 --deqp-archive-dir="${cts_vk_dir}/.."      \
+--deqp-log-filename="/dev/null"            \
 --deqp-log-images=disable                  \
 --deqp-log-shader-sources=disable          \
+--deqp-shadercache=disable                 \
+--deqp-log-decompiled-spirv=disable        \
+--deqp-log-flush=disable                   \
 --deqp-caselist-file="${caselist_file}"    \
 &> "${results_file}"