diff --git a/js/friction-main.js b/js/friction-main.js
index 5fd4567f..3b1d43a6 100644
--- a/js/friction-main.js
+++ b/js/friction-main.js
@@ -1,4 +1,4 @@
-// Copyright 2013-2017, University of Colorado Boulder
+// Copyright 2013-2018, University of Colorado Boulder
 
 /**
  * Main entry point for the 'Friction' sim.
diff --git a/js/friction.js b/js/friction.js
index bf9dad47..4dc60e43 100644
--- a/js/friction.js
+++ b/js/friction.js
@@ -1,4 +1,4 @@
-// Copyright 2016, University of Colorado Boulder
+// Copyright 2016-2018, University of Colorado Boulder
 
 /**
  * Creates the namespace for this simulation.
diff --git a/js/friction/FrictionA11yStrings.js b/js/friction/FrictionA11yStrings.js
index 915d119f..49a0ac87 100644
--- a/js/friction/FrictionA11yStrings.js
+++ b/js/friction/FrictionA11yStrings.js
@@ -1,4 +1,4 @@
-// Copyright 2017, University of Colorado Boulder
+// Copyright 2017-2018, University of Colorado Boulder
 
 /**
  * Single location of all accessibility strings.  These strings are not meant to be translatable yet.  Rosetta needs
diff --git a/js/friction/FrictionSharedConstants.js b/js/friction/FrictionSharedConstants.js
index 3de4b826..877074b8 100644
--- a/js/friction/FrictionSharedConstants.js
+++ b/js/friction/FrictionSharedConstants.js
@@ -1,4 +1,4 @@
-// Copyright 2013-2017, University of Colorado Boulder
+// Copyright 2013-2018, University of Colorado Boulder
 
 /**
  * Shared constants for the 'Friction' simulation.
diff --git a/js/friction/view/FrictionKeyboardHelpContentPanel.js b/js/friction/view/FrictionKeyboardHelpContentPanel.js
index a636cf07..0a18a46e 100644
--- a/js/friction/view/FrictionKeyboardHelpContentPanel.js
+++ b/js/friction/view/FrictionKeyboardHelpContentPanel.js
@@ -1,4 +1,4 @@
-// Copyright 2017, University of Colorado Boulder
+// Copyright 2017-2018, University of Colorado Boulder
 
 /**
  * Content for the "Hot Keys and Help" dialog that can be brought up from the sim navigation bar.
diff --git a/js/friction/view/FrictionScreenView.js b/js/friction/view/FrictionScreenView.js
index c15911d0..bb07b052 100644
--- a/js/friction/view/FrictionScreenView.js
+++ b/js/friction/view/FrictionScreenView.js
@@ -1,4 +1,4 @@
-// Copyright 2013-2017, University of Colorado Boulder
+// Copyright 2013-2018, University of Colorado Boulder
 
 /**
  * main ScreenView container.