diff --git a/.ci/docker-compose-file/docker-compose-ldap.yaml b/.ci/docker-compose-file/docker-compose-ldap.yaml
index 03627c763..6804f6b01 100644
--- a/.ci/docker-compose-file/docker-compose-ldap.yaml
+++ b/.ci/docker-compose-file/docker-compose-ldap.yaml
@@ -6,6 +6,8 @@ services:
     build:
       context: ../..
       dockerfile: .ci/docker-compose-file/openldap/Dockerfile
+    ulimits:
+      nofile: 1024
     image: openldap
     #ports:
     #  - 389:389