diff --git a/packer/build.pkr.hcl b/packer/build.pkr.hcl
index 841a1b4..7e2e1db 100644
--- a/packer/build.pkr.hcl
+++ b/packer/build.pkr.hcl
@@ -85,7 +85,7 @@ build {
       <<EOF
         groupadd -r ssh-user
         usermod -aG ssh-user root
-        passwd -d root
+        usermod -p '*' root
       EOF
       ,
       <<EOF