diff --git a/Jenkinsfile b/Jenkinsfile
index 2bba058..bbf9085 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -11,7 +11,9 @@ spec:
     volumeMounts:
       - name: jenkins-docker-cfg
         mountPath: /kaniko/.docker
-  envVars: [envVar(key: "MEDUSA_VER", value: "0.4.2")]
+  env:
+  - name: "MEDUSA_VER"
+    value: "0.4.2"
   volumes:
   - name: jenkins-docker-cfg
     projected: