diff --git a/docs/admin/auth.md b/docs/admin/auth.md
index 877ef1d8af929..24cd880ce64b3 100644
--- a/docs/admin/auth.md
+++ b/docs/admin/auth.md
@@ -38,6 +38,12 @@ CODER_OAUTH2_GITHUB_CLIENT_ID="8d1...e05"
 CODER_OAUTH2_GITHUB_CLIENT_SECRET="57ebc9...02c24c"
 ```
 
+**Note:** To allow everyone to signup using GitHub, set:
+
+```console
+CODER_OAUTH2_GITHUB_ALLOW_EVERYONE=true
+```
+
 Once complete, run `sudo service coder restart` to reboot Coder.
 
 ## OpenID Connect with Google