diff --git a/Library/Homebrew/cmd/bundle.rb b/Library/Homebrew/cmd/bundle.rb
index d4b71ee956..27c5ece7c8 100755
--- a/Library/Homebrew/cmd/bundle.rb
+++ b/Library/Homebrew/cmd/bundle.rb
@@ -87,7 +87,9 @@ module Homebrew
         switch "--install",
                description: "Run `install` before continuing to other operations e.g. `exec`."
         switch "--services",
-               description: "Temporarily start services while running the `exec` or `sh` command."
+               env:         :bundle_services,
+               description: "Temporarily start services while running the `exec` or `sh` command. " \
+                            "This is enabled by default if `$HOMEBREW_BUNDLE_SERVICES` is set."
         switch "-f", "--force",
                description: "`install` runs with `--force`/`--overwrite`. " \
                             "`dump` overwrites an existing `Brewfile`. " \
diff --git a/completions/fish/brew.fish b/completions/fish/brew.fish
index 000621eb85..398951e1d8 100644
--- a/completions/fish/brew.fish
+++ b/completions/fish/brew.fish
@@ -521,7 +521,7 @@ __fish_brew_complete_arg 'bundle' -l no-restart -d '`dump` does not add `restart
 __fish_brew_complete_arg 'bundle' -l no-upgrade -d '`install` does not run `brew upgrade` on outdated dependencies. `check` does not check for outdated dependencies. Note they may still be upgraded by `brew install` if needed. This is enabled by default if `$HOMEBREW_BUNDLE_NO_UPGRADE` is set'
 __fish_brew_complete_arg 'bundle' -l no-vscode -d '`dump` without VSCode (and forks/variants) extensions. This is enabled by default if `$HOMEBREW_BUNDLE_DUMP_NO_VSCODE` is set'
 __fish_brew_complete_arg 'bundle' -l quiet -d 'Make some output more quiet'
-__fish_brew_complete_arg 'bundle' -l services -d 'Temporarily start services while running the `exec` or `sh` command'
+__fish_brew_complete_arg 'bundle' -l services -d 'Temporarily start services while running the `exec` or `sh` command. This is enabled by default if `$HOMEBREW_BUNDLE_SERVICES` is set'
 __fish_brew_complete_arg 'bundle' -l tap -d '`list` or `dump` Homebrew tap dependencies'
 __fish_brew_complete_arg 'bundle' -l upgrade -d '`install` runs `brew upgrade` on outdated dependencies, even if `$HOMEBREW_BUNDLE_NO_UPGRADE` is set'
 __fish_brew_complete_arg 'bundle' -l upgrade-formulae -d '`install` runs `brew upgrade` on any of these comma-separated formulae, even if `$HOMEBREW_BUNDLE_NO_UPGRADE` is set'
diff --git a/completions/zsh/_brew b/completions/zsh/_brew
index 1ee19173f2..48bd1ac9d9 100644
--- a/completions/zsh/_brew
+++ b/completions/zsh/_brew
@@ -664,7 +664,7 @@ _brew_bundle() {
     '--no-upgrade[`install` does not run `brew upgrade` on outdated dependencies. `check` does not check for outdated dependencies. Note they may still be upgraded by `brew install` if needed. This is enabled by default if `$HOMEBREW_BUNDLE_NO_UPGRADE` is set]' \
     '(--all --vscode)--no-vscode[`dump` without VSCode (and forks/variants) extensions. This is enabled by default if `$HOMEBREW_BUNDLE_DUMP_NO_VSCODE` is set]' \
     '--quiet[Make some output more quiet]' \
-    '--services[Temporarily start services while running the `exec` or `sh` command]' \
+    '--services[Temporarily start services while running the `exec` or `sh` command. This is enabled by default if `$HOMEBREW_BUNDLE_SERVICES` is set]' \
     '--tap[`list` or `dump` Homebrew tap dependencies]' \
     '(--install)--upgrade[`install` runs `brew upgrade` on outdated dependencies, even if `$HOMEBREW_BUNDLE_NO_UPGRADE` is set]' \
     '--upgrade-formulae[`install` runs `brew upgrade` on any of these comma-separated formulae, even if `$HOMEBREW_BUNDLE_NO_UPGRADE` is set]' \
diff --git a/docs/Manpage.md b/docs/Manpage.md
index 25317ae968..cb356f5878 100644
--- a/docs/Manpage.md
+++ b/docs/Manpage.md
@@ -258,7 +258,8 @@ flags which will help with finding keg-only dependencies like `openssl`,
 
 `--services`
 
-: Temporarily start services while running the `exec` or `sh` command.
+: Temporarily start services while running the `exec` or `sh` command. This is
+  enabled by default if `$HOMEBREW_BUNDLE_SERVICES` is set.
 
 `-f`, `--force`
 
diff --git a/manpages/brew.1 b/manpages/brew.1
index 6630de88bb..62167ec7e9 100644
--- a/manpages/brew.1
+++ b/manpages/brew.1
@@ -157,7 +157,7 @@ Read from or write to the \fBBrewfile\fP from \fB$HOMEBREW_BUNDLE_FILE_GLOBAL\fP
 Run \fBinstall\fP before continuing to other operations e\.g\. \fBexec\fP\&\.
 .TP
 \fB\-\-services\fP
-Temporarily start services while running the \fBexec\fP or \fBsh\fP command\.
+Temporarily start services while running the \fBexec\fP or \fBsh\fP command\. This is enabled by default if \fB$HOMEBREW_BUNDLE_SERVICES\fP is set\.
 .TP
 \fB\-f\fP, \fB\-\-force\fP
 \fBinstall\fP runs with \fB\-\-force\fP/\fB\-\-overwrite\fP\&\. \fBdump\fP overwrites an existing \fBBrewfile\fP\&\. \fBcleanup\fP actually performs its cleanup operations\.