diff --git a/Jenkinsfile b/Jenkinsfile
index c0f0df9..e9998f5 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -1,7 +1,7 @@
 pipeline {
     agent {
         docker {
-            image `python:slim`
+            image "python:slim"
         }
     }