diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index feffc46..8cf3dbc 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -38,8 +38,10 @@ build_api:
 unit_test:
   stage: test
   services:
-    - $CI_REGISTRY_IMAGE/zeo:$CI_COMMIT_REF_SLUG
-    - $CI_REGISTRY_IMAGE/webui:$CI_COMMIT_REF_SLUG
+    - name: $CI_REGISTRY_IMAGE/zeo:$CI_COMMIT_REF_SLUG
+      alias: zeo
+    - name: $CI_REGISTRY_IMAGE/webui:$CI_COMMIT_REF_SLUG
+      alias: webui
   image: ubuntu:20.04
   tags:
     - docker
diff --git a/src/webui/flaskr/zeo_db.py b/src/webui/flaskr/zeo_db.py
index e77c66d..aa07f1d 100644
--- a/src/webui/flaskr/zeo_db.py
+++ b/src/webui/flaskr/zeo_db.py
@@ -5,8 +5,8 @@ from flask import Flask
 
 
 app = Flask(__name__)
-addr = socket.gethostbyname("zeo")
-storage = ClientStorage((addr, 8100))
+ipv4 = socket.gethostbyname("zeo")
+storage = ClientStorage((ipv4, 8100))
 db = DB(storage)
 cx = db.open()