diff --git a/package.json b/package.json
index f284890..f46c142 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "npmci": "dist/cli.js"
   },
   "scripts": {
-    "test": "(npmts) && (npm run testVersion)",
+    "test": "(rm -f config.json) && (npmts) && (npm run testVersion)",
     "testVersion": "(cd test/assets/ && node ../../dist/cli.js -v)"
   },
   "repository": {
diff --git a/test/test.ts b/test/test.ts
index 43a8a6c..20e40a7 100644
--- a/test/test.ts
+++ b/test/test.ts
@@ -15,6 +15,7 @@ import NpmciBuildDocker = require('../dist/mod_docker/index')
 import NpmciPublish = require('../dist/mod_publish/index')
 import NpmciTest = require('../dist/mod_test/index')
 import NpmciSsh = require('../dist/npmci.ssh')
+import NpmciEnv = require('../dist/npmci.env')
 
 let dockerfile1: NpmciBuildDocker.Dockerfile
 let dockerfile2: NpmciBuildDocker.Dockerfile
@@ -75,4 +76,8 @@ tap.test('reset paths', async () => {
   }
 })
 
+tap.test('', async () => {
+  await NpmciEnv.configStore()
+})
+
 tap.start()