diff --git a/docker-compose.yml b/docker-compose.yml
index 558946b..3e67d4b 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -88,6 +88,7 @@ services:
             - XMPP_GUEST_DOMAIN
             - XMPP_MUC_DOMAIN
             - XMPP_RECORDER_DOMAIN
+            - TOKEN_AUTH_URL
         networks:
             meet.jitsi:
                 aliases:
diff --git a/env.example b/env.example
index 64a174c..4ebcc4e 100644
--- a/env.example
+++ b/env.example
@@ -335,3 +335,6 @@ JIBRI_LOGS_DIR=/config/logs
 # Container restart policy
 # Defaults to unless-stopped
 RESTART_POLICY=unless-stopped
+
+# Authenticate using external service or just focus external auth window if there is one already.
+# TOKEN_AUTH_URL=https://auth.meet.example.com/{room}
diff --git a/web/rootfs/defaults/settings-config.js b/web/rootfs/defaults/settings-config.js
index 368dbd8..7471e50 100644
--- a/web/rootfs/defaults/settings-config.js
+++ b/web/rootfs/defaults/settings-config.js
@@ -255,6 +255,11 @@ config.transcribingEnabled = {{ $ENABLE_TRANSCRIPTIONS }};
 config.brandingDataUrl = '{{ .Env.BRANDING_DATA_URL }}';
 {{ end -}}
 
+{{ if .Env.TOKEN_AUTH_URL -}}
+// Authenticate using external service or just focus external auth window if there is one already.
+config.tokenAuthUrl = '{{ .Env.TOKEN_AUTH_URL }}';
+{{ end -}}
+
 
 // Deployment information.
 //