diff --git a/timedmap_test.go b/timedmap_test.go
index 130d0bb..4488c95 100644
--- a/timedmap_test.go
+++ b/timedmap_test.go
@@ -108,6 +108,18 @@ func TestTimedMapExpiration(t *testing.T) {
 	}
 }
 
+func TestTimedMapOverride(t *testing.T) {
+	tm := New[string, int](time.Minute)
+	tm.Put("key1", 19, 100*time.Millisecond)
+  time.Sleep(50 * time.Millisecond)
+	tm.Put("key1", 23, 200*time.Millisecond)
+	time.Sleep(100 * time.Millisecond)
+	_, ok := tm.Get("key1")
+	if !ok {
+		t.Errorf("expected key1 to still be present")
+	}
+}
+
 func TestTimedMapCleanup(t *testing.T) {
 	tm := New[string, int](200 * time.Millisecond)
 	tm.Put("key", 19, 100*time.Millisecond)