diff --git a/DEPENDENCIES b/DEPENDENCIES
index 0e44ada1..ecc2d0ea 100644
--- a/DEPENDENCIES
+++ b/DEPENDENCIES
@@ -1,4 +1,4 @@
 vendorpull https://github.com/sourcemeta/vendorpull dea311b5bfb53b6926a4140267959ae334d3ecf4
-noa https://github.com/sourcemeta/noa 2ce51f80794ad6dfd9547efa0d3b3d8fa85adbcf
+noa https://github.com/sourcemeta/noa 1827a68799cfef6f1b9bf967f66d21dd42a84f96
 jsontoolkit https://github.com/sourcemeta/jsontoolkit b5f2d36f05bb9d608700b78ac0922688689d5b41
 jsonschema-test-suite https://github.com/json-schema-org/JSON-Schema-Test-Suite c2badb1298a8698f86dadf1aea7b44b3a894e5ac
diff --git a/vendor/noa/cmake/noa/defaults.cmake b/vendor/noa/cmake/noa/defaults.cmake
index 06ea6eb3..9d85f222 100644
--- a/vendor/noa/cmake/noa/defaults.cmake
+++ b/vendor/noa/cmake/noa/defaults.cmake
@@ -93,3 +93,42 @@ if(NOA_COMPILER_LLVM AND CMAKE_BUILD_TYPE STREQUAL "Release" AND NOT BUILD_SHARE
   set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -flto=full")
   set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -flto=full")
 endif()
+
+# Attempt to enable SIMD (SSE/AVX/NEON)
+include(CheckCXXCompilerFlag)
+if(CMAKE_SYSTEM_PROCESSOR MATCHES "x86|AMD64")
+  if(MSVC)
+    check_cxx_compiler_flag("/arch:AVX2" COMPILER_SUPPORTS_AVX2)
+    if(COMPILER_SUPPORTS_AVX2)
+      message(STATUS "Enabling SIMD AVX2")
+      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:AVX2")
+    elseif(NOT CMAKE_CL_64)
+      message(STATUS "Enabling SIMD SSE2")
+      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} /arch:SSE2")
+    endif()
+  else()
+    check_cxx_compiler_flag("-mavx2" COMPILER_SUPPORTS_AVX2)
+    if(COMPILER_SUPPORTS_AVX2)
+      message(STATUS "Enabling SIMD AVX2")
+      set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -mavx2")
+    else()
+      check_cxx_compiler_flag("-msse4.2" COMPILER_SUPPORTS_SSE42)
+      if(COMPILER_SUPPORTS_SSE42)
+        message(STATUS "Enabling SIMD SSE4.2")
+        set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse4.2")
+      else()
+        check_cxx_compiler_flag("-msse2" COMPILER_SUPPORTS_SSE2)
+        if(COMPILER_SUPPORTS_SSE2)
+          message(STATUS "Enabling SIMD SSE2")
+          set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -msse2")
+        endif()
+      endif()
+    endif()
+  endif()
+elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "arm64|aarch64" AND NOT MSVC)
+  check_cxx_compiler_flag("-march=armv8-a+fp+simd" COMPILER_SUPPORTS_NEON)
+  if(COMPILER_SUPPORTS_NEON)
+    message(STATUS "Enabling SIMD NEON")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -march=armv8-a+fp+simd")
+  endif()
+endif()