diff --git a/Library/Homebrew/brew.sh b/Library/Homebrew/brew.sh
index 48a8cf56f2..ec6a1149e4 100644
--- a/Library/Homebrew/brew.sh
+++ b/Library/Homebrew/brew.sh
@@ -506,11 +506,11 @@ esac
 # and also update references in docs/Installation.md,
 # https://github.com/Homebrew/install/blob/HEAD/install.sh and
 # MacOSVersion::SYMBOLS
-HOMEBREW_MACOS_NEWEST_UNSUPPORTED="14"
+HOMEBREW_MACOS_NEWEST_UNSUPPORTED="15"
 # TODO: bump version when new macOS is released and also update
 # references in docs/Installation.md and
 # https://github.com/Homebrew/install/blob/HEAD/install.sh
-HOMEBREW_MACOS_OLDEST_SUPPORTED="11"
+HOMEBREW_MACOS_OLDEST_SUPPORTED="12"
 HOMEBREW_MACOS_OLDEST_ALLOWED="10.11"
 
 if [[ -n "${HOMEBREW_MACOS}" ]]
diff --git a/docs/Installation.md b/docs/Installation.md
index e0c007fa7f..10510b3db7 100644
--- a/docs/Installation.md
+++ b/docs/Installation.md
@@ -9,7 +9,7 @@ The macOS `.pkg` installer also installs Homebrew to its default prefix (`/opt/h
 ## macOS Requirements
 
 * A 64-bit Intel CPU or Apple Silicon CPU <sup>[1](#1)</sup>
-* macOS Big Sur (11) (or higher) <sup>[2](#2)</sup>
+* macOS Monterey (12) (or higher) <sup>[2](#2)</sup>
 * Command Line Tools (CLT) for Xcode (from `xcode-select --install` or
   [https://developer.apple.com/download/all/](https://developer.apple.com/download/all/)) or
   [Xcode](https://itunes.apple.com/us/app/xcode/id497799835) <sup>[3](#3)</sup>
@@ -88,7 +88,7 @@ Uninstallation is documented in the [FAQ](FAQ.md#how-do-i-uninstall-homebrew).
 
 <a data-proofer-ignore name="1"><sup>1</sup></a> For 32-bit or PPC support see [Tigerbrew](https://github.com/mistydemeo/tigerbrew).
 
-<a data-proofer-ignore name="2"><sup>2</sup></a> macOS 11 (Big Sur) or higher is best and supported, 10.11 (El Capitan) – 10.15 (Catalina) are unsupported but may work and 10.10 (Yosemite) and older will not run Homebrew at all. For 10.4 (Tiger) – 10.6 (Snow Leopard) see [Tigerbrew](https://github.com/mistydemeo/tigerbrew).
+<a data-proofer-ignore name="2"><sup>2</sup></a> macOS 12 (Monterey) or higher is best and supported, 10.11 (El Capitan) – 11 (Big Sur) are unsupported but may work and 10.10 (Yosemite) and older will not run Homebrew at all. For 10.4 (Tiger) – 10.6 (Snow Leopard) see [Tigerbrew](https://github.com/mistydemeo/tigerbrew).
 
 <a data-proofer-ignore name="3"><sup>3</sup></a> You may need to install Xcode, the CLT, or both depending on the formula, to install a bottle (binary package) which is the only supported configuration. Downloading Xcode may require an Apple Developer account on older versions of Mac OS X. Sign up for free at [Apple's website](https://developer.apple.com/account/).