diff --git a/Jenkinsfile b/Jenkinsfile
index 3c24f79..b1e98b7 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,12 +1,10 @@
 pipeline {
     agent any
-    tools {
-        dotnetsdk 'dotnet7'
-    }
     stages {
         stage('clean old'){
             steps{
                 sh 'rm -rf bin obj'
+                cleanWs()
             }
         }
         stage('linux') {