diff --git a/js/common/model/ProjectileMotionModel.ts b/js/common/model/ProjectileMotionModel.ts
index 1b3f9393..dc08181c 100644
--- a/js/common/model/ProjectileMotionModel.ts
+++ b/js/common/model/ProjectileMotionModel.ts
@@ -1,4 +1,4 @@
-// Copyright 2016-2023, University of Colorado Boulder
+// Copyright 2016-2024, University of Colorado Boulder
 
 /**
  * Common model (base type) for Projectile Motion.