diff --git a/Jenkinsfile b/Jenkinsfile
index 7ae0923..256b798 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -48,7 +48,7 @@ pipeline {
         axes {
           axis {
             name 'NODE_VERSION'
-            values '12', '14', '16', '18'
+            values '16', '18', '20'
           }
         }
 
diff --git a/package.json b/package.json
index 9bb6fc5..2074d51 100644
--- a/package.json
+++ b/package.json
@@ -54,7 +54,7 @@
   },
   "homepage": "https://github.com/logdna/pino-logdna#readme",
   "dependencies": {
-    "@logdna/logger": "^2.4.1",
+    "@logdna/logger": "^2.6.8",
     "nopt": "^5.0.0",
     "pino-abstract-transport": "^0.5.0"
   },
@@ -92,6 +92,7 @@
     "100": true,
     "ts": false,
     "jsx": false,
+    "color": false,
     "check-coverage": true,
     "jobs": 1,
     "timeout": 60,
diff --git a/test/common/test-server.js b/test/common/test-server.js
index 4e75c46..b72fa30 100644
--- a/test/common/test-server.js
+++ b/test/common/test-server.js
@@ -30,8 +30,8 @@ module.exports = function create(test) {
       server.listen(listen_port)
       await once(server, 'listening')
 
-      const {address, port} = server.address()
-      return `http://${address}:${port}`
+      const {port} = server.address()
+      return `http://localhost:${port}`
     }
   , async close() {
       server.close()