diff --git a/src/datasources/issues.ts b/src/datasources/issues.ts
index cb9f001..d200c37 100644
--- a/src/datasources/issues.ts
+++ b/src/datasources/issues.ts
@@ -1,17 +1,21 @@
 import { RedmineTypes } from '@app/redmine-types/index';
-import { Injectable } from '@nestjs/common';
-import nano from 'nano';
+import { Injectable, Logger } from '@nestjs/common';
 import configuration from '../configs/app';
+import nano = require('nano');
 
 const config = configuration();
 
 @Injectable()
 export class Issues {
+  private static logger = new Logger(Issues.name);
+
   static async getDatasource(): Promise<
     nano.DocumentScope<RedmineTypes.Issue>
   > {
+    Issues.logger.debug(`Issues datasource url = ${config.couchDbUrl}`);
     const n = nano(config.couchDbUrl);
     const dbs = await n.db.list();
+    Issues.logger.debug(`Issues datasource db name = ${config.dbs.issues}`);
     if (!dbs.includes(config.dbs.issues)) {
       await n.db.create(config.dbs.issues);
     }