diff --git a/js/input/TInputListener.ts b/js/input/TInputListener.ts
index 0f9431c06..c7048c15c 100644
--- a/js/input/TInputListener.ts
+++ b/js/input/TInputListener.ts
@@ -1,4 +1,4 @@
-// Copyright 2021-2023, University of Colorado Boulder
+// Copyright 2021-2024, University of Colorado Boulder
 
 /**
  * The main type interface for input listeners.
diff --git a/js/overlays/HighlightOverlay.ts b/js/overlays/HighlightOverlay.ts
index 8cda39c64..eb58192e3 100644
--- a/js/overlays/HighlightOverlay.ts
+++ b/js/overlays/HighlightOverlay.ts
@@ -1,4 +1,4 @@
-// Copyright 2015-2023, University of Colorado Boulder
+// Copyright 2015-2024, University of Colorado Boulder
 
 /**
  * An overlay that implements highlights for a Display. This is responsible for drawing the highlights and