diff --git a/cmd/tag.go b/cmd/tag.go
index 5b5b19f..9055daf 100644
--- a/cmd/tag.go
+++ b/cmd/tag.go
@@ -141,8 +141,10 @@ func tagRun(cmd *cobra.Command, args []string) error {
 	}
 
 	// update tag
-	release.Tag = &args[0]
-
+	release = &keygenext.Release{
+		ID:  release.ID,
+		Tag: &args[0],
+	}
 	if err := release.Update(); err != nil {
 		if e, ok := err.(*keygenext.Error); ok {
 			var code string
diff --git a/cmd/untag.go b/cmd/untag.go
index 8417ce0..92926d3 100644
--- a/cmd/untag.go
+++ b/cmd/untag.go
@@ -132,8 +132,10 @@ func untagRun(cmd *cobra.Command, args []string) error {
 	}
 
 	// remove tag
-	release.Tag = nil
-
+	release = &keygenext.Release{
+		ID:  release.ID,
+		Tag: nil,
+	}
 	if err := release.Update(); err != nil {
 		if e, ok := err.(*keygenext.Error); ok {
 			var code string