diff --git a/shared/definition.go b/shared/definition.go
index b7e7363..b8d4ae7 100644
--- a/shared/definition.go
+++ b/shared/definition.go
@@ -254,6 +254,7 @@ func (d *Definition) Validate() error {
 		"portage",
 		"yum",
 		"equo",
+		"zypper",
 	}
 	if !shared.StringInSlice(strings.TrimSpace(d.Packages.Manager), validManagers) {
 		return fmt.Errorf("packages.manager must be one of %v", validManagers)