diff --git a/js/SimVersion.js b/js/SimVersion.js
index 416db674d..c7c3cb76c 100644
--- a/js/SimVersion.js
+++ b/js/SimVersion.js
@@ -1,4 +1,4 @@
-// Copyright 2019-2020, University of Colorado Boulder
+// Copyright 2019, University of Colorado Boulder
 
 /**
  * Handles serializing and deserializing versions for simulations.