diff --git a/Jenkinsfile b/Jenkinsfile
index b3eea6ae..50c3ef8b 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -34,6 +34,9 @@ pipeline {
 				}
 			}
 			steps {
+				sh 'apk update && apk upgrade'
+				sh 'which phpdbg'
+				sh 'phpdbg -V'
 				sh 'phpdbg -dmemory_limit=-1 -qrr -- ./vendor/bin/phpunit --coverage-clover build/logs/clover.xml --colors=never'
 				step([
 					$class: 'CloverPublisher',