diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5064973ba73..2f6d1e4dda9 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -18,7 +18,7 @@ int main() {}
 ]=] WINDOWS_SDK_VERSION_CHECK)
 
 if(NOT WINDOWS_SDK_VERSION_CHECK)
-    message(FATAL_ERROR "The STL must be built with the Windows 11 SDK (10.0.26100.3916) or later. Make sure it's available by selecting it in the Individual Components tab of the VS Installer.")
+    message(FATAL_ERROR "The STL must be built with the Windows 11 SDK (10.0.26100.4188) or later. Make sure it's available by selecting it in the Individual Components tab of the VS Installer.")
 endif()
 
 if(NOT DEFINED VCLIBS_TARGET_ARCHITECTURE)
@@ -92,20 +92,18 @@ set(STL_ARCHIVE_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/out/lib/${VCLIBS_I386_OR
 set(STL_LIBRARY_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/out/lib/${VCLIBS_I386_OR_AMD64}")
 set(STL_RUNTIME_OUTPUT_DIRECTORY "${PROJECT_BINARY_DIR}/out/bin/${VCLIBS_I386_OR_AMD64}")
 
-# TRANSITION, update internal crt-common.settings.targets, atlmfc.settings.targets, and fe-components.settings.targets
-# from NTDDI_WIN10_NI to NTDDI_WIN11_GE when the internal WinSDK is updated.
 add_compile_definitions(
     _ALLOW_ITERATOR_DEBUG_LEVEL_MISMATCH WIN32_LEAN_AND_MEAN STRICT _CRT_STDIO_ARBITRARY_WIDE_SPECIFIERS
     _WIN32_WINNT=0x0A00 NTDDI_VERSION=NTDDI_WIN11_GE)
 
 if(STL_USE_ANALYZE)
-    # TRANSITION, Windows SDK 10.0.26100.3916 emits
+    # TRANSITION, Windows SDK 10.0.26100.4188 emits
     # "warning C6553: The annotation for function 'LCMapStringEx' on _Param_(9) does not apply to a value type."
     # Reported as OS-40109504 "Windows SDK: incorrect SAL annotations on functions the STL uses".
     add_compile_options("$<$<COMPILE_LANGUAGE:CXX>:/analyze:autolog-;/wd6553>")
 
     if(VCLIBS_TARGET_ARCHITECTURE STREQUAL "arm64ec")
-        # TRANSITION, Windows SDK 10.0.26100.3916 emits
+        # TRANSITION, Windows SDK 10.0.26100.4188 emits
         # "warning C28301: No annotations for first declaration of 'meow'"
         # for various intrinsics when building for ARM64EC.
         add_compile_options("$<$<COMPILE_LANGUAGE:CXX>:/wd28301>")
diff --git a/README.md b/README.md
index d7b661218fb..e1172f370c0 100644
--- a/README.md
+++ b/README.md
@@ -142,7 +142,7 @@ Just try to follow these rules, so we can spend more time fixing bugs and implem
 # How To Build With The Visual Studio IDE
 
 1. Install Visual Studio 2022 17.14.8 Preview 1 or later.
-    * Select "Windows 11 SDK (10.0.26100.3916)" in the VS Installer.
+    * Select "Windows 11 SDK (10.0.26100.4188)" in the VS Installer.
     * Select "MSVC v143 - VS 2022 C++ ARM64/ARM64EC build tools (Latest)" in the VS Installer
     if you would like to build the ARM64/ARM64EC target.
     * We recommend selecting "C++ CMake tools for Windows" in the VS Installer.
@@ -159,7 +159,7 @@ Just try to follow these rules, so we can spend more time fixing bugs and implem
 # How To Build With A Native Tools Command Prompt
 
 1. Install Visual Studio 2022 17.14.8 Preview 1 or later.
-    * Select "Windows 11 SDK (10.0.26100.3916)" in the VS Installer.
+    * Select "Windows 11 SDK (10.0.26100.4188)" in the VS Installer.
     * Select "MSVC v143 - VS 2022 C++ ARM64/ARM64EC build tools (Latest)" in the VS Installer
     if you would like to build the ARM64/ARM64EC target.
     * We recommend selecting "C++ CMake tools for Windows" in the VS Installer.
diff --git a/tests/utils/stl/test/tests.py b/tests/utils/stl/test/tests.py
index b049c185fa8..f8762f1cb2d 100644
--- a/tests/utils/stl/test/tests.py
+++ b/tests/utils/stl/test/tests.py
@@ -258,7 +258,7 @@ def _handleEnvlst(self, litConfig):
                 self.compileFlags.append('/arm64EC')
                 self.linkFlags.append('/machine:arm64ec')
 
-                # TRANSITION, Windows SDK 10.0.26100.3916 emits
+                # TRANSITION, Windows SDK 10.0.26100.4188 emits
                 # "warning C28301: No annotations for first declaration of 'meow'"
                 # for various intrinsics when building for ARM64EC.
                 self.compileFlags.append('/wd28301')