diff --git a/.env.sample b/.env.sample
index 7ec91d7d8..af0933e22 100644
--- a/.env.sample
+++ b/.env.sample
@@ -24,3 +24,9 @@ CACHE_TYPE=redis
 AUTH_JWT_SECRET=
 AUTH_SERVER_ENCRYPTION_SERVER_KEY=
 VALET_TOKEN_SECRET=
+
+#########
+# OTHER #
+#########
+
+COOKIE_DOMAIN=