diff --git a/docs/Manpage.md b/docs/Manpage.md
index a70fd29ee5..61118b1500 100644
--- a/docs/Manpage.md
+++ b/docs/Manpage.md
@@ -2028,8 +2028,11 @@ example, run `export HOMEBREW_NO_INSECURE_REDIRECT=1` rather than just
 - `HOMEBREW_GITHUB_PACKAGES_TOKEN`
   <br>Use this GitHub personal access token when accessing the GitHub Packages Registry (where bottles may be stored).
 
+- `HOMEBREW_DOCKER_REGISTRY_BASIC_AUTH_TOKEN`
+  <br>Use this base64 encoded username and password for authenticating with a Docker registry proxying GitHub Packages. If HOMEBREW_DOCKER_REGISTRY_TOKEN is set, it will be used instead.
+
 - `HOMEBREW_DOCKER_REGISTRY_TOKEN`
-  <br>Use this bearer token for authenticating with a Docker registry proxying GitHub Packages.
+  <br>Use this bearer token for authenticating with a Docker registry proxying GitHub Packages. Preferred over HOMEBREW_DOCKER_REGISTRY_TOKEN_BASIC.
 
 - `HOMEBREW_GITHUB_PACKAGES_USER`
   <br>Use this username when accessing the GitHub Packages Registry (where bottles may be stored).
diff --git a/manpages/brew.1 b/manpages/brew.1
index 9879161277..640949ff8f 100644
--- a/manpages/brew.1
+++ b/manpages/brew.1
@@ -2910,10 +2910,16 @@ Use this personal access token for the GitHub API, for features such as \fBbrew
 Use this GitHub personal access token when accessing the GitHub Packages Registry (where bottles may be stored)\.
 .
 .TP
+\fBHOMEBREW_DOCKER_REGISTRY_BASIC_AUTH_TOKEN\fR
+.
+.br
+Use this base64 encoded username and password for authenticating with a Docker registry proxying GitHub Packages\. If HOMEBREW_DOCKER_REGISTRY_TOKEN is set, it will be used instead\.
+.
+.TP
 \fBHOMEBREW_DOCKER_REGISTRY_TOKEN\fR
 .
 .br
-Use this bearer token for authenticating with a Docker registry proxying GitHub Packages\.
+Use this bearer token for authenticating with a Docker registry proxying GitHub Packages\. Preferred over HOMEBREW_DOCKER_REGISTRY_TOKEN_BASIC\.
 .
 .TP
 \fBHOMEBREW_GITHUB_PACKAGES_USER\fR