diff --git a/Jenkinsfile b/Jenkinsfile
index d56c308..e7c711e 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -45,8 +45,7 @@ pipeline {
     stage('Build production deliverable') {
       steps {
         script {
-          ZIP_DATE=$(date '+%Y-%m-%d_%H-%M-%S')
-          env.ZIP_FILE="url-shortener_$ZIP_DATE" 
+          env.ZIP_FILE=sh(script: 'echo "url-shortener_$(date "+%Y-%m-%d_%H-%M-%S").tgz', returnStdout: true)
         }
         catchError(buildResult: 'FAILURE', stageResult: 'FAILURE') {
           sh ''' #!/usr/local/bin/bash