diff --git a/js/accessibility/EnglishStringToCodeMap.ts b/js/accessibility/EnglishStringToCodeMap.ts
index cf6981924..b5dde475c 100644
--- a/js/accessibility/EnglishStringToCodeMap.ts
+++ b/js/accessibility/EnglishStringToCodeMap.ts
@@ -1,4 +1,4 @@
-// Copyright 2022-2023, University of Colorado Boulder
+// Copyright 2022-2024, University of Colorado Boulder
 
 /**
  * Maps the english key you want to use to the associated KeyboardEvent.codes for usage in listeners.
diff --git a/js/accessibility/KeyStateTracker.ts b/js/accessibility/KeyStateTracker.ts
index ce1606595..327e09085 100644
--- a/js/accessibility/KeyStateTracker.ts
+++ b/js/accessibility/KeyStateTracker.ts
@@ -1,4 +1,4 @@
-// Copyright 2018-2023, University of Colorado Boulder
+// Copyright 2018-2024, University of Colorado Boulder
 
 /**
  * A type that will manage the state of the keyboard. This will track which keys are being held down and for how long.