diff --git a/README.md b/README.md
index 49debd821..89862e068 100644
--- a/README.md
+++ b/README.md
@@ -97,8 +97,7 @@ Read Amber documentation on https://docs.amberframework.org/amber
 Install the standalone CLI with Homebrew on macOS or Linux:
 
 ```bash
-brew tap amberframework/amber_cli
-brew install amber_cli
+brew install amberframework/amber_cli/amber_cli
 amber --version
 ```
 
diff --git a/RELEASE_NOTES_V2_BETA1.md b/RELEASE_NOTES_V2_BETA1.md
index a82ff5e34..cca09c4ce 100644
--- a/RELEASE_NOTES_V2_BETA1.md
+++ b/RELEASE_NOTES_V2_BETA1.md
@@ -11,8 +11,7 @@ it for production workloads that cannot tolerate them.
 Install Amber CLI 2.0.2 or newer:
 
 ```bash
-brew tap amberframework/amber_cli
-brew install amber_cli
+brew install amberframework/amber_cli/amber_cli
 amber new my_app --type web
 cd my_app
 crystal spec
diff --git a/RELEASE_NOTES_V2_BETA2.md b/RELEASE_NOTES_V2_BETA2.md
index dcb49db84..3721317f1 100644
--- a/RELEASE_NOTES_V2_BETA2.md
+++ b/RELEASE_NOTES_V2_BETA2.md
@@ -17,8 +17,7 @@ It keeps the same public beta surface and fixes application startup on Crystal
 Install Amber CLI 2.0.2 or newer:
 
 ```bash
-brew tap amberframework/amber_cli
-brew install amber_cli
+brew install amberframework/amber_cli/amber_cli
 amber new my_app --type web
 cd my_app
 crystal spec
diff --git a/docs/beta-installation.md b/docs/beta-installation.md
index c4e99c778..f969d0dd2 100644
--- a/docs/beta-installation.md
+++ b/docs/beta-installation.md
@@ -35,11 +35,13 @@ git --version
 The tap name contains an underscore:
 
 ```bash
-brew tap amberframework/amber_cli
-brew install amber_cli
+brew install amberframework/amber_cli/amber_cli
 amber --version
 ```
 
+The fully qualified command follows Homebrew's tap-trust model and trusts only
+the `amber_cli` formula. The installed executables are `amber` and `amber-lsp`.
+
 The expected CLI version is `2.0.2` or newer. If another executable is found,
 run `command -v amber` and use the troubleshooting section below.
 
diff --git a/docs/migration-guide.md b/docs/migration-guide.md
index 0b3599e5f..c61fa8c0d 100644
--- a/docs/migration-guide.md
+++ b/docs/migration-guide.md
@@ -36,8 +36,7 @@ amber routes
 **After (V2 beta):**
 
 ```bash
-brew tap amberframework/amber_cli
-brew install amber_cli
+brew install amberframework/amber_cli/amber_cli
 amber new my_app --type web
 cd my_app
 shards install
diff --git a/scripts/check_beta_contract.sh b/scripts/check_beta_contract.sh
index 06fd23109..ad7e930cf 100755
--- a/scripts/check_beta_contract.sh
+++ b/scripts/check_beta_contract.sh
@@ -7,8 +7,7 @@ test "$shard_version" = "2.0.0-beta.2"
 test "$source_version" = "$shard_version"
 
 files=(README.md docs/README.md docs/getting-started.md docs/beta-installation.md docs/migration-guide.md RELEASE_NOTES_V2_BETA2.md)
-grep -F 'brew tap amberframework/amber_cli' docs/beta-installation.md
-grep -F 'brew install amber_cli' docs/beta-installation.md
+grep -F 'brew install amberframework/amber_cli/amber_cli' docs/beta-installation.md
 grep -F 'version: 2.0.0-beta.2' docs/getting-started.md
 if grep -R -F 'Process.fork' src; then
   echo "Amber V2 must compile with Crystal's default multithreaded runtime" >&2
@@ -19,7 +18,7 @@ fi
 # runtime condition keeps the call reachable to the compiler.
 crystal eval 'require "./src/amber"; Amber::Server.start if ENV["AMBER_COMPILE_SERVER"]?'
 
-if grep -Ein 'crimson-knight/(amber|grant|gemma)|amberframework/amber-cli|brew install amber-cli|branch: v2-dev' "${files[@]}"; then
+if grep -Ein 'crimson-knight/(amber|grant|gemma)|amberframework/amber-cli|brew tap amberframework/amber_cli|brew install amber-cli|brew install amber_cli|branch: v2-dev' "${files[@]}"; then
   echo "Amber beta docs contain a stale install or dependency instruction" >&2
   exit 1
 fi