diff --git a/js/A11yButtonsHBox.js b/js/A11yButtonsHBox.js
index 7a02ef25..5fbaf2fd 100644
--- a/js/A11yButtonsHBox.js
+++ b/js/A11yButtonsHBox.js
@@ -1,4 +1,4 @@
-// Copyright 2018, University of Colorado Boulder
+// Copyright 2018-2019, University of Colorado Boulder
 
 /**
  * Creates an HBox that can have the sound toggle button, a11y button, or be empty
diff --git a/js/JoistButton.js b/js/JoistButton.js
index 110b80bd..80ba34aa 100644
--- a/js/JoistButton.js
+++ b/js/JoistButton.js
@@ -1,4 +1,4 @@
-// Copyright 2014-2018, University of Colorado Boulder
+// Copyright 2014-2019, University of Colorado Boulder
 
 /**
  * Base class for Joist buttons such as the "home" button and "PhET" button that show custom highlighting on mouseover.
diff --git a/js/NavigationBar.js b/js/NavigationBar.js
index 67c1ab96..12a9e6fd 100644
--- a/js/NavigationBar.js
+++ b/js/NavigationBar.js
@@ -1,4 +1,4 @@
-// Copyright 2013-2018, University of Colorado Boulder
+// Copyright 2013-2019, University of Colorado Boulder
 
 /**
  * The navigation bar at the bottom of the screen.
diff --git a/js/NavigationBarSoundToggleButton.js b/js/NavigationBarSoundToggleButton.js
index fbfd51ef..def8cb9c 100644
--- a/js/NavigationBarSoundToggleButton.js
+++ b/js/NavigationBarSoundToggleButton.js
@@ -1,4 +1,4 @@
-// Copyright 2018, University of Colorado Boulder
+// Copyright 2018-2019, University of Colorado Boulder
 
 /**
  * a button for controlling whether sound is enabled or disabled for the sim and that is designed to work on the PhET
diff --git a/js/OptionsDialog.js b/js/OptionsDialog.js
index c8074470..32f0cfff 100644
--- a/js/OptionsDialog.js
+++ b/js/OptionsDialog.js
@@ -1,4 +1,4 @@
-// Copyright 2014-2018, University of Colorado Boulder
+// Copyright 2014-2019, University of Colorado Boulder
 
 /**
  * Shows an Options dialog that consists of sim-global options.
diff --git a/js/OptionsDialogIO.js b/js/OptionsDialogIO.js
index 8d3cfabb..b4fd47ec 100644
--- a/js/OptionsDialogIO.js
+++ b/js/OptionsDialogIO.js
@@ -1,4 +1,4 @@
-// Copyright 2017-2018, University of Colorado Boulder
+// Copyright 2017-2019, University of Colorado Boulder
 
 /**
  * IO type for OptionsDialog
diff --git a/js/PhetButtonIO.js b/js/PhetButtonIO.js
index 26f5b202..418f30fb 100644
--- a/js/PhetButtonIO.js
+++ b/js/PhetButtonIO.js
@@ -1,4 +1,4 @@
-// Copyright 2018, University of Colorado Boulder
+// Copyright 2018-2019, University of Colorado Boulder
 
 /**
  * IO type for PhetButton, to interface with phet-io api.  The PhetButtonIO acts as the main phet-io branding/logo in
diff --git a/js/PhetMenu.js b/js/PhetMenu.js
index 4a24a98f..dc52fc29 100644
--- a/js/PhetMenu.js
+++ b/js/PhetMenu.js
@@ -1,4 +1,4 @@
-// Copyright 2013-2018, University of Colorado Boulder
+// Copyright 2013-2019, University of Colorado Boulder
 
 /**
  * The 'PhET' menu, which appears in the bottom-right of the home screen and the navigation bar, with options like
diff --git a/js/PhetMenuIO.js b/js/PhetMenuIO.js
index 8254b7c1..fdfecf2e 100644
--- a/js/PhetMenuIO.js
+++ b/js/PhetMenuIO.js
@@ -1,4 +1,4 @@
-// Copyright 2017-2018, University of Colorado Boulder
+// Copyright 2017-2019, University of Colorado Boulder
 
 /**
  * IO type for PhetMenu
diff --git a/js/ProjectorModeCheckbox.js b/js/ProjectorModeCheckbox.js
index cc2607d7..20ca4a52 100644
--- a/js/ProjectorModeCheckbox.js
+++ b/js/ProjectorModeCheckbox.js
@@ -1,4 +1,4 @@
-// Copyright 2018, University of Colorado Boulder
+// Copyright 2018-2019, University of Colorado Boulder
 
 /**
  * a checkbox that can be used to turn projector mode on and off
diff --git a/js/SimLauncher.js b/js/SimLauncher.js
index e6219ac6..970f8356 100644
--- a/js/SimLauncher.js
+++ b/js/SimLauncher.js
@@ -1,4 +1,4 @@
-// Copyright 2013-2018, University of Colorado Boulder
+// Copyright 2013-2019, University of Colorado Boulder
 /**
  * Launches a PhET Simulation, after preloading the specified images.
  *
diff --git a/js/demo/DialogsScreenView.js b/js/demo/DialogsScreenView.js
index 0343e7fa..48c6e342 100644
--- a/js/demo/DialogsScreenView.js
+++ b/js/demo/DialogsScreenView.js
@@ -1,4 +1,4 @@
-// Copyright 2015-2018, University of Colorado Boulder
+// Copyright 2015-2019, University of Colorado Boulder
 
 /**
  * View for demonstrating dialogs.
diff --git a/js/joist-config.js b/js/joist-config.js
index a8b32cdb..3dbbbc15 100644
--- a/js/joist-config.js
+++ b/js/joist-config.js
@@ -1,4 +1,4 @@
-// Copyright 2019, University of Colorado Boulder
+// Copyright 2015-2019, University of Colorado Boulder
 
 /*
  * IMPORTANT: This file was auto-generated by "grunt generate-config". Please do not modify this directly. Instead
diff --git a/js/joist-test-config.js b/js/joist-test-config.js
index 896812eb..947ba90c 100644
--- a/js/joist-test-config.js
+++ b/js/joist-test-config.js
@@ -1,4 +1,4 @@
-// Copyright 2019, University of Colorado Boulder
+// Copyright 2015-2019, University of Colorado Boulder
 
 /*
  * IMPORTANT: This file was auto-generated by "grunt generate-config". Please do not modify this directly. Instead
diff --git a/js/thirdPartySupport/LegendsOfLearningSupport.js b/js/thirdPartySupport/LegendsOfLearningSupport.js
index eb6d0c97..0fbc3ad1 100644
--- a/js/thirdPartySupport/LegendsOfLearningSupport.js
+++ b/js/thirdPartySupport/LegendsOfLearningSupport.js
@@ -1,4 +1,4 @@
-// Copyright 2017-2018, University of Colorado Boulder
+// Copyright 2017-2019, University of Colorado Boulder
 
 /**
  * Support for Legends of Learning platform. Sends init message after sim is constructed and support pause/resume.