diff --git a/.env.sample b/.env.sample
index c966ab8..58b1937 100644
--- a/.env.sample
+++ b/.env.sample
@@ -151,3 +151,4 @@ DB_FLAVOR=sqlite
 # Mailman settings
 ###################################
 # COMPOSE_FILE="compose.yml:compose.mailman.yml"
+# MAILMAN_CORE_VOLUME=lists_example_com_mailman-core
diff --git a/compose.mailman.yml b/compose.mailman.yml
index 50c9d7f..5a1c007 100644
--- a/compose.mailman.yml
+++ b/compose.mailman.yml
@@ -12,6 +12,7 @@ volumes:
   mailman-core:
     # https://git.autonomic.zone/coop-cloud/mailman3/src/branch/master/compose.yml
     external: true
+    name: ${MAILMAN_CORE_VOLUME}
 
 configs:
   postfix_override: