diff --git a/README.md b/README.md
index 29f86801..fa01eec1 100644
--- a/README.md
+++ b/README.md
@@ -48,9 +48,6 @@ The following software packages, or their equivalents, are expected to be instal
 - [Docker](https://www.docker.com/) container runtime or a compatible tool, e.g. [Podman](https://podman.io/),
 - [asdf](https://asdf-vm.com/) version manager,
 - [GNU make](https://www.gnu.org/software/make/) 3.82 or later,
-- [GNU coreutils](https://www.gnu.org/software/coreutils/) and [GNU binutils](https://www.gnu.org/software/binutils/) may be required to build dependencies like Python, which may need to be compiled during installation. For macOS users, this has been scripted and automated by the `dotfiles` project; please see this [script](https://github.com/nhs-england-tools/dotfiles/blob/main/assets/20-install-base-packages.macos.sh) for details,
-- [Python](https://www.python.org/) required to run Git hooks,
-- [`jq`](https://jqlang.github.io/jq/) a lightweight and flexible command-line JSON processor.
 
 > [!NOTE]<br>
 > The version of GNU make available by default on macOS is earlier than 3.82. You will need to upgrade it or certain `make` tasks will fail. On macOS, you will need [Homebrew](https://brew.sh/) installed, then to install `make`, like so:
@@ -59,7 +56,16 @@ The following software packages, or their equivalents, are expected to be instal
 > brew install make
 > ```
 >
-> You will then see instructions to fix your `$PATH` variable to make the newly installed version available. If you are using [dotfiles](https://github.com/nhs-england-tools/dotfiles), this is all done for you.
+> You will then see instructions to fix your [`$PATH`](https://github.com/nhs-england-tools/dotfiles/blob/main/dot_path.tmpl) variable to make the newly installed version available. If you are using [dotfiles](https://github.com/nhs-england-tools/dotfiles), this is all done for you.
+
+- [GNU sed](https://www.gnu.org/software/sed/) and [GNU grep](https://www.gnu.org/software/grep/) are required for the scripted command-line output processing,
+- [GNU coreutils](https://www.gnu.org/software/coreutils/) and [GNU binutils](https://www.gnu.org/software/binutils/) may be required to build dependencies like Python, which may need to be compiled during installation,
+
+> [!NOTE]<br>
+> For macOS users, installation of the GNU toolchain has been scripted and automated as part of the `dotfiles` project. Please see this [script](https://github.com/nhs-england-tools/dotfiles/blob/main/assets/20-install-base-packages.macos.sh) for details.
+
+- [Python](https://www.python.org/) required to run Git hooks,
+- [`jq`](https://jqlang.github.io/jq/) a lightweight and flexible command-line JSON processor.
 
 ### Configuration
 
diff --git a/scripts/config/vale/styles/Vocab/words/accept.txt b/scripts/config/vale/styles/Vocab/words/accept.txt
index eb9cd04e..2c35a52b 100644
--- a/scripts/config/vale/styles/Vocab/words/accept.txt
+++ b/scripts/config/vale/styles/Vocab/words/accept.txt
@@ -13,5 +13,6 @@ Trufflehog
 bot
 idempotence
 onboarding
+sed
 toolchain
 [A-Z]+s