diff --git a/docs/Manpage.md b/docs/Manpage.md
index 2ea5a2b32124a..d0a394294f5d0 100644
--- a/docs/Manpage.md
+++ b/docs/Manpage.md
@@ -4912,6 +4912,13 @@ command execution (e.g. `$(cat file)`).
 : If set, do not print any hints about changing Homebrew's behaviour with
   environment variables.
 
+`HOMEBREW_NO_EVAL_ENV_SCRUBBING`
+
+: If set, sensitive environment variables are available while evaluating
+  formulae and casks. `$HOMEBREW_GITHUB_API_TOKEN` is still available during
+  evaluation when this is unset. This setting will be removed in a later
+  release.
+
 `HOMEBREW_NO_FORCE_BREW_WRAPPER`
 
 : `Deprecated:` If set, disables `$HOMEBREW_FORCE_BREW_WRAPPER` behaviour, even
diff --git a/manpages/brew.1 b/manpages/brew.1
index 37dc2c17c2bf9..b4ae31b486320 100644
--- a/manpages/brew.1
+++ b/manpages/brew.1
@@ -3210,6 +3210,9 @@ If set, do not print \fB$HOMEBREW_INSTALL_BADGE\fP on a successful build\.
 \fBHOMEBREW_NO_ENV_HINTS\fP
 If set, do not print any hints about changing Homebrew\[u2019]s behaviour with environment variables\.
 .TP
+\fBHOMEBREW_NO_EVAL_ENV_SCRUBBING\fP
+If set, sensitive environment variables are available while evaluating formulae and casks\. \fB$HOMEBREW_GITHUB_API_TOKEN\fP is still available during evaluation when this is unset\. This setting will be removed in a later release\.
+.TP
 \fBHOMEBREW_NO_FORCE_BREW_WRAPPER\fP
 \fBDeprecated:\fP If set, disables \fB$HOMEBREW_FORCE_BREW_WRAPPER\fP behaviour, even if set\.
 .TP