diff --git a/Jenkinsfile b/Jenkinsfile
index 034c3cd..9698c36 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -4,6 +4,7 @@ pipeline {
     stages {
         stage('mocha') {
             steps {
+                sh 'npm install'
                 sh 'npm install --dev'
                 sh 'npm run test'
             }