diff --git a/docker-compose.yml b/docker-compose.yml
index a867af5..c8791f3 100644
--- a/docker-compose.yml
+++ b/docker-compose.yml
@@ -9,6 +9,7 @@ services:
     volumes:
       - .:/var/www
       - ./docker/app/php.ini:/usr/local/etc/php/conf.d/app.ini:ro
+      - ./docker/app/zz-fpm-pool.conf:/usr/local/etc/php-fpm.d/zzz-pool.conf:ro
     depends_on:
       postgres:
         condition: service_healthy
diff --git a/docker/app/zz-fpm-pool.conf b/docker/app/zz-fpm-pool.conf
new file mode 100644
index 0000000..ca02cfc
--- /dev/null
+++ b/docker/app/zz-fpm-pool.conf
@@ -0,0 +1,8 @@
+[www]
+; SSE connections hold a worker for up to 90 s each — raise the pool ceiling
+; so regular requests are not starved.
+pm = dynamic
+pm.max_children = 30
+pm.start_servers = 4
+pm.min_spare_servers = 2
+pm.max_spare_servers = 8