diff --git a/Jenkinsfile b/Jenkinsfile
index 03d4f70..16ba3ac 100644
--- a/Jenkinsfile
+++ b/Jenkinsfile
@@ -22,6 +22,10 @@ node("linux && amd64 && docker") {
       file(credentialsId: 'freetz.image_signing.pem', variable: 'FREETZ_IMAGE_SIGNING_PEM'),
     ]) {
       sh """
+      chown freetz:freetz \
+        \"\${FREETZ_IMAGE_SIGNING_ASC}\" \
+        \"\${FREETZ_IMAGE_SIGNING_KEY}\" \
+        \"\${FREETZ_IMAGE_SIGNING_PEM}\"
       cp \"\${FREETZ_IMAGE_SIGNING_ASC}\" ~freetz/.freetz.image_signing.asc
       cp \"\${FREETZ_IMAGE_SIGNING_KEY}\" ~freetz/.freetz.image_signing.key
       cp \"\${FREETZ_IMAGE_SIGNING_PEM}\" ~freetz/.freetz.image_signing.pem