diff --git a/ci/Jenkinsfile.prs b/ci/Jenkinsfile.prs
index 59b92e679..c56cd929e 100644
--- a/ci/Jenkinsfile.prs
+++ b/ci/Jenkinsfile.prs
@@ -75,6 +75,7 @@ pipeline {
   post {
     success { script { github.notifyPR(true) } }
     failure { script { github.notifyPR(false) } }
+    always { cleanWs() }
   } // post
 } // pipeline