diff --git a/templates/configmap-env.yaml b/templates/configmap-env.yaml
index 5d0b96d..5da6895 100644
--- a/templates/configmap-env.yaml
+++ b/templates/configmap-env.yaml
@@ -25,6 +25,9 @@ data:
   {{- if .Values.mastodon.web_domain }}
   WEB_DOMAIN: {{ .Values.mastodon.web_domain }}
   {{- end }}
+  {{- if .Values.mastodon.alternate_domains }}
+  ALTERNATE_DOMAINS: {{ join "," .Values.mastodon.alternate_domains }}
+  {{- end }}
   {{- if .Values.mastodon.singleUserMode }}
   SINGLE_USER_MODE: "true"
   {{- end }}
diff --git a/values.yaml b/values.yaml
index 07171fc..1328f0f 100644
--- a/values.yaml
+++ b/values.yaml
@@ -30,6 +30,11 @@ mastodon:
   # Use of WEB_DOMAIN requires careful consideration: https://docs.joinmastodon.org/admin/config/#federation
   # You must redirect the path LOCAL_DOMAIN/.well-known/ to WEB_DOMAIN/.well-known/ as described
   # web_domain: mastodon.example.com
+  # If you have multiple domains pointed at your Mastodon server, this setting will allow Mastodon to recognize
+  # itself when users are addressed using those other domains.
+  # alternate_domains:
+  #   - foo.com
+  #   - bar.com
   # If set to true, the frontpage of your Mastodon server will always redirect to the first profile in the database and registrations will be disabled.
   singleUserMode: false
   persistence: