diff --git a/timer.go b/timer.go
index da823a5..6c346b7 100644
--- a/timer.go
+++ b/timer.go
@@ -212,6 +212,10 @@ func (timer *Timer) HasProject(project string) bool {
 	return false
 }
 
+func (timer *Timer) SetTag(name, val string) {
+	timer.AdditionalTags[name] = val
+}
+
 func (timer *Timer) HasTag(name string) bool {
 	_, ok := timer.AdditionalTags[name]
 	return ok