diff --git a/README.md b/README.md
index f73bb247d2..5c1ec0ee93 100644
--- a/README.md
+++ b/README.md
@@ -47,7 +47,7 @@ Ensure you have the required dependencies:
 
  * CMake >= 3.15
  * System C/C++ Toolchain
- * LLVM, Clang, LLD development libraries, version 21.x, compiled with the
+ * LLVM, Clang, LLD development libraries, version 22.x, compiled with the
    same system C/C++ toolchain.
    - If the system package manager lacks these libraries, or has them misconfigured,
      see below for how to build them from source.
@@ -257,15 +257,15 @@ that you have **no** trailing slash (`/` or `\`) at the end of the
 
 Install [CMake](https://cmake.org/), version 3.20.0 or newer.
 
-[Download LLVM, Clang, and LLD sources](https://releases.llvm.org/download.html#21.0.0)
+[Download LLVM, Clang, and LLD sources](https://releases.llvm.org/download.html#22.0.0)
 The downloads from llvm lead to the github release pages, where the source's
-will be listed as : `llvm-21.X.X.src.tar.xz`, `clang-21.X.X.src.tar.xz`,
-`lld-21.X.X.src.tar.xz`. Unzip each to their own directory. Ensure no
+will be listed as : `llvm-22.X.X.src.tar.xz`, `clang-22.X.X.src.tar.xz`,
+`lld-22.X.X.src.tar.xz`. Unzip each to their own directory. Ensure no
 directories have spaces in them. For example:
 
- * `C:\Users\Andy\llvm-21.0.0.src`
- * `C:\Users\Andy\clang-21.0.0.src`
- * `C:\Users\Andy\lld-21.0.0.src`
+ * `C:\Users\Andy\llvm-22.0.0.src`
+ * `C:\Users\Andy\clang-22.0.0.src`
+ * `C:\Users\Andy\lld-22.0.0.src`
 
 Install [Build Tools for Visual Studio
 2019](https://visualstudio.microsoft.com/downloads/#build-tools-for-visual-studio-2019).
@@ -298,9 +298,9 @@ Using the start menu, run **x64 Native Tools Command Prompt for VS 2019** and ex
 ##### Release Mode
 
 ```bat
-mkdir C:\Users\Andy\llvm-21.0.0.src\build-release
-cd C:\Users\Andy\llvm-21.0.0.src\build-release
-"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\Andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-release-mt -DCMAKE_PREFIX_PATH=C:\Users\Andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-release-mt -
+mkdir C:\Users\Andy\llvm-22.0.0.src\build-release
+cd C:\Users\Andy\llvm-22.0.0.src\build-release
+"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\Andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-release-mt -DCMAKE_PREFIX_PATH=C:\Users\Andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-release-mt -
 DLLVM_ENABLE_ZLIB=OFF -DCMAKE_BUILD_TYPE=Release -DLLVM_ENABLE_LIBXML2=OFF -DLLVM_USE_CRT_RELEASE=MT
 msbuild /m -p:Configuration=Release INSTALL.vcxproj
 ```
@@ -308,10 +308,10 @@ msbuild /m -p:Configuration=Release INSTALL.vcxproj
 ##### Debug Mode
 
 ```bat
-mkdir C:\Users\Andy\llvm-21.0.0.src\build-debug
-cd C:\Users\Andy\llvm-21.0.0.src\build-debug
-"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-debug -
-DLLVM_ENABLE_ZLIB=OFF -DCMAKE_PREFIX_PATH=C:\Users\andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-debug -DCMAKE_BUILD_TYPE=Debug -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="AVR" -DLLVM_ENABLE_LIBXML2=OFF -DLLVM_USE_CRT_DEBUG=MTd
+mkdir C:\Users\Andy\llvm-22.0.0.src\build-debug
+cd C:\Users\Andy\llvm-22.0.0.src\build-debug
+"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-debug -
+DLLVM_ENABLE_ZLIB=OFF -DCMAKE_PREFIX_PATH=C:\Users\andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-debug -DCMAKE_BUILD_TYPE=Debug -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="AVR" -DLLVM_ENABLE_LIBXML2=OFF -DLLVM_USE_CRT_DEBUG=MTd
 msbuild /m INSTALL.vcxproj
 ```
 
@@ -322,18 +322,18 @@ Using the start menu, run **x64 Native Tools Command Prompt for VS 2019** and ex
 ##### Release Mode
 
 ```bat
-mkdir C:\Users\Andy\lld-21.0.0.src\build-release
-cd C:\Users\Andy\lld-21.0.0.src\build-release
-"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\Andy\llvm+clang+lld-14.0.6-x86_64-windows-msvc-release-mt -DCMAKE_PREFIX_PATH=C:\Users\Andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-release-mt -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_CRT_RELEASE=MT
+mkdir C:\Users\Andy\lld-22.0.0.src\build-release
+cd C:\Users\Andy\lld-22.0.0.src\build-release
+"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\Andy\llvm+clang+lld-14.0.6-x86_64-windows-msvc-release-mt -DCMAKE_PREFIX_PATH=C:\Users\Andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-release-mt -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_CRT_RELEASE=MT
 msbuild /m -p:Configuration=Release INSTALL.vcxproj
 ```
 
 ##### Debug Mode
 
 ```bat
-mkdir C:\Users\Andy\lld-21.0.0.src\build-debug
-cd C:\Users\Andy\lld-21.0.0.src\build-debug
-"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-debug -DCMAKE_PREFIX_PATH=C:\Users\andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-debug -DCMAKE_BUILD_TYPE=Debug -DLLVM_USE_CRT_DEBUG=MTd
+mkdir C:\Users\Andy\lld-22.0.0.src\build-debug
+cd C:\Users\Andy\lld-22.0.0.src\build-debug
+"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-debug -DCMAKE_PREFIX_PATH=C:\Users\andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-debug -DCMAKE_BUILD_TYPE=Debug -DLLVM_USE_CRT_DEBUG=MTd
 msbuild /m INSTALL.vcxproj
 ```
 
@@ -344,18 +344,18 @@ Using the start menu, run **x64 Native Tools Command Prompt for VS 2019** and ex
 ##### Release Mode
 
 ```bat
-mkdir C:\Users\Andy\clang-21.0.0.src\build-release
-cd C:\Users\Andy\clang-21.0.0.src\build-release
-"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\Andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-release-mt -DCMAKE_PREFIX_PATH=C:\Users\Andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-release-mt -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_CRT_RELEASE=MT
+mkdir C:\Users\Andy\clang-22.0.0.src\build-release
+cd C:\Users\Andy\clang-22.0.0.src\build-release
+"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\Andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-release-mt -DCMAKE_PREFIX_PATH=C:\Users\Andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-release-mt -DCMAKE_BUILD_TYPE=Release -DLLVM_USE_CRT_RELEASE=MT
 msbuild /m -p:Configuration=Release INSTALL.vcxproj
 ```
 
 ##### Debug Mode
 
 ```bat
-mkdir C:\Users\Andy\clang-21.0.0.src\build-debug
-cd C:\Users\Andy\clang-21.0.0.src\build-debug
-"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-debug -DCMAKE_PREFIX_PATH=C:\Users\andy\llvm+clang+lld-21.0.0-x86_64-windows-msvc-debug -DCMAKE_BUILD_TYPE=Debug -DLLVM_USE_CRT_DEBUG=MTd
+mkdir C:\Users\Andy\clang-22.0.0.src\build-debug
+cd C:\Users\Andy\clang-22.0.0.src\build-debug
+"c:\Program Files\CMake\bin\cmake.exe" .. -Thost=x64 -G "Visual Studio 16 2019" -A x64 -DCMAKE_INSTALL_PREFIX=C:\Users\andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-debug -DCMAKE_PREFIX_PATH=C:\Users\andy\llvm+clang+lld-22.0.0-x86_64-windows-msvc-debug -DCMAKE_BUILD_TYPE=Debug -DLLVM_USE_CRT_DEBUG=MTd
 msbuild /m INSTALL.vcxproj
 ```
 
@@ -371,14 +371,14 @@ This is the generally recommended approach.
 
 ```sh
 cd ~/Downloads
-git clone --depth 1 --branch release/21.x https://github.com/llvm/llvm-project llvm-project-21
-cd llvm-project-21
-git checkout release/21.x
+git clone --depth 1 --branch release/22.x https://github.com/llvm/llvm-project llvm-project-22
+cd llvm-project-22
+git checkout release/22.x
 
 mkdir build-release
 cd build-release
 cmake ../llvm \
-  -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm21-assert \
+  -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm22-assert \
   -DCMAKE_BUILD_TYPE=Release \
   -DLLVM_ENABLE_PROJECTS="lld;clang" \
   -DLLVM_ENABLE_LIBXML2=OFF \
@@ -398,16 +398,16 @@ others are in Release mode.
 
 ```sh
 cd ~/Downloads
-git clone --depth 1 --branch release/21.x https://github.com/llvm/llvm-project llvm-project-21
-cd llvm-project-21
-git checkout release/21.x
+git clone --depth 1 --branch release/22.x https://github.com/llvm/llvm-project llvm-project-22
+cd llvm-project-22
+git checkout release/22.x
 
 # LLVM
 mkdir llvm/build-debug
 cd llvm/build-debug
 cmake .. \
-  -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm21-debug \
-  -DCMAKE_PREFIX_PATH=$HOME/local/llvm21-debug \
+  -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm22-debug \
+  -DCMAKE_PREFIX_PATH=$HOME/local/llvm22-debug \
   -DCMAKE_BUILD_TYPE=Debug \
   -DLLVM_ENABLE_LIBXML2=OFF \
   -DLLVM_ENABLE_TERMINFO=OFF \
@@ -421,8 +421,8 @@ cd ../..
 mkdir lld/build-debug
 cd lld/build-debug
 cmake .. \
-  -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm21-debug \
-  -DCMAKE_PREFIX_PATH=$HOME/local/llvm21-debug \
+  -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm22-debug \
+  -DCMAKE_PREFIX_PATH=$HOME/local/llvm22-debug \
   -DCMAKE_BUILD_TYPE=Release \
   -DLLVM_PARALLEL_LINK_JOBS=1 \
   -DCMAKE_CXX_STANDARD=17 \
@@ -434,8 +434,8 @@ cd ../..
 mkdir clang/build-debug
 cd clang/build-debug
 cmake .. \
-  -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm21-debug \
-  -DCMAKE_PREFIX_PATH=$HOME/local/llvm21-debug \
+  -DCMAKE_INSTALL_PREFIX=$HOME/local/llvm22-debug \
+  -DCMAKE_PREFIX_PATH=$HOME/local/llvm22-debug \
   -DCMAKE_BUILD_TYPE=Release \
   -DLLVM_PARALLEL_LINK_JOBS=1 \
   -DLLVM_INCLUDE_TESTS=OFF \
@@ -445,8 +445,8 @@ cd ../..
 ```
 
 Then add to your Zig CMake line that you got from the README.md:
-`-DCMAKE_PREFIX_PATH=$HOME/local/llvm21-debug` or
-`-DCMAKE_PREFIX_PATH=$HOME/local/llvm21-assert` depending on whether you want
+`-DCMAKE_PREFIX_PATH=$HOME/local/llvm22-debug` or
+`-DCMAKE_PREFIX_PATH=$HOME/local/llvm22-assert` depending on whether you want
 Debug or Release LLVM.