diff --git a/Gruntfile.js b/Gruntfile.js
index 3b33f9369..f71d0aa19 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -1,7 +1,7 @@
 /*!
  * Bootstrap's Gruntfile
  * http://getbootstrap.com
- * Copyright 2013-2016 Twitter, Inc.
+ * Copyright 2013-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/LICENSE b/LICENSE
index 7a300022c..6ca0ceecc 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2011-2016 Twitter, Inc.
+Copyright (c) 2011-2018 Twitter, Inc.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal
diff --git a/README.md b/README.md
index 86f65e05c..9e19d562c 100644
--- a/README.md
+++ b/README.md
@@ -147,4 +147,4 @@ Thanks to [BrowserStack](https://www.browserstack.com/) for providing the infras
 
 ## Copyright and license
 
-Code and documentation copyright 2011-2016 Twitter, Inc. Code released under [the MIT license](https://github.com/twbs/bootstrap/blob/master/LICENSE). Docs released under [Creative Commons](https://github.com/twbs/bootstrap/blob/master/docs/LICENSE).
+Code and documentation copyright 2011-2018 Twitter, Inc. Code released under [the MIT license](https://github.com/twbs/bootstrap/blob/master/LICENSE). Docs released under [Creative Commons](https://github.com/twbs/bootstrap/blob/master/docs/LICENSE).
diff --git a/docs/_includes/getting-started/browser-device-support.html b/docs/_includes/getting-started/browser-device-support.html
index b935c3875..a0a12115f 100644
--- a/docs/_includes/getting-started/browser-device-support.html
+++ b/docs/_includes/getting-started/browser-device-support.html
@@ -158,7 +158,7 @@
 {% endhighlight %}
 
 {% highlight js %}
-// Copyright 2014-2015 Twitter, Inc.
+// Copyright 2014-2018 Twitter, Inc.
 // Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
 if (navigator.userAgent.match(/IEMobile\/10\.0/)) {
   var msViewportStyle = document.createElement('style')
diff --git a/docs/assets/js/ie-emulation-modes-warning.js b/docs/assets/js/ie-emulation-modes-warning.js
index 3f97ba58b..e19b70fa0 100644
--- a/docs/assets/js/ie-emulation-modes-warning.js
+++ b/docs/assets/js/ie-emulation-modes-warning.js
@@ -2,7 +2,7 @@
 // IT'S JUST JUNK FOR OUR DOCS!
 // ++++++++++++++++++++++++++++++++++++++++++
 /*!
- * Copyright 2014-2015 Twitter, Inc.
+ * Copyright 2014-2018 Twitter, Inc.
  *
  * Licensed under the Creative Commons Attribution 3.0 Unported License. For
  * details, see https://creativecommons.org/licenses/by/3.0/.
diff --git a/docs/assets/js/ie10-viewport-bug-workaround.js b/docs/assets/js/ie10-viewport-bug-workaround.js
index 479a6ebda..f7a5ed675 100644
--- a/docs/assets/js/ie10-viewport-bug-workaround.js
+++ b/docs/assets/js/ie10-viewport-bug-workaround.js
@@ -1,6 +1,6 @@
 /*!
  * IE10 viewport hack for Surface/desktop Windows 8 bug
- * Copyright 2014-2015 Twitter, Inc.
+ * Copyright 2014-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/docs/assets/js/ie8-responsive-file-warning.js b/docs/assets/js/ie8-responsive-file-warning.js
index 98983f86d..fb1f1bfab 100644
--- a/docs/assets/js/ie8-responsive-file-warning.js
+++ b/docs/assets/js/ie8-responsive-file-warning.js
@@ -2,7 +2,7 @@
 // IT'S JUST JUNK FOR OUR DOCS!
 // ++++++++++++++++++++++++++++++++++++++++++
 /*!
- * Copyright 2011-2015 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  *
  * Licensed under the Creative Commons Attribution 3.0 Unported License. For
  * details, see https://creativecommons.org/licenses/by/3.0/.
diff --git a/docs/assets/js/src/application.js b/docs/assets/js/src/application.js
index 9a5a7485c..6f1468d87 100644
--- a/docs/assets/js/src/application.js
+++ b/docs/assets/js/src/application.js
@@ -4,7 +4,7 @@
 
 /*!
  * JavaScript for Bootstrap's docs (http://getbootstrap.com)
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under the Creative Commons Attribution 3.0 Unported License. For
  * details, see https://creativecommons.org/licenses/by/3.0/.
  */
diff --git a/docs/assets/js/src/customizer.js b/docs/assets/js/src/customizer.js
index dd1f1765a..7fd6216e6 100644
--- a/docs/assets/js/src/customizer.js
+++ b/docs/assets/js/src/customizer.js
@@ -1,6 +1,6 @@
 /*!
  * Bootstrap Customizer (http://getbootstrap.com/customize/)
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  *
  * Licensed under the Creative Commons Attribution 3.0 Unported License. For
  * details, see https://creativecommons.org/licenses/by/3.0/.
diff --git a/docs/assets/less/docs.less b/docs/assets/less/docs.less
index 3b5968290..7e4e56adc 100644
--- a/docs/assets/less/docs.less
+++ b/docs/assets/less/docs.less
@@ -1,6 +1,6 @@
 /*!
  * Bootstrap Docs (http://getbootstrap.com)
- * Copyright 2011-2017 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under the Creative Commons Attribution 3.0 Unported License. For
  * details, see https://creativecommons.org/licenses/by/3.0/.
  */
diff --git a/docs/assets/less/ie10-viewport-bug-workaround.less b/docs/assets/less/ie10-viewport-bug-workaround.less
index cc8fd6f69..91211e15b 100644
--- a/docs/assets/less/ie10-viewport-bug-workaround.less
+++ b/docs/assets/less/ie10-viewport-bug-workaround.less
@@ -2,7 +2,7 @@
 
 /*!
  * IE10 viewport hack for Surface/desktop Windows 8 bug
- * Copyright 2014-2015 Twitter, Inc.
+ * Copyright 2014-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/grunt/bs-commonjs-generator.js b/grunt/bs-commonjs-generator.js
index 0b4ebbfc1..9c38c261e 100644
--- a/grunt/bs-commonjs-generator.js
+++ b/grunt/bs-commonjs-generator.js
@@ -1,7 +1,7 @@
 /*!
  * Bootstrap Grunt task for the CommonJS module generation
  * http://getbootstrap.com
- * Copyright 2014-2015 Twitter, Inc.
+ * Copyright 2014-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/grunt/bs-glyphicons-data-generator.js b/grunt/bs-glyphicons-data-generator.js
index af2a82e27..ea658e6dc 100644
--- a/grunt/bs-glyphicons-data-generator.js
+++ b/grunt/bs-glyphicons-data-generator.js
@@ -1,7 +1,7 @@
 /*!
  * Bootstrap Grunt task for Glyphicons data generation
  * http://getbootstrap.com
- * Copyright 2014-2015 Twitter, Inc.
+ * Copyright 2014-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/grunt/bs-lessdoc-parser.js b/grunt/bs-lessdoc-parser.js
index 5a9ed2b3d..abcd0dd52 100644
--- a/grunt/bs-lessdoc-parser.js
+++ b/grunt/bs-lessdoc-parser.js
@@ -1,7 +1,7 @@
 /*!
  * Bootstrap Grunt task for parsing Less docstrings
  * http://getbootstrap.com
- * Copyright 2014-2015 Twitter, Inc.
+ * Copyright 2014-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/grunt/bs-raw-files-generator.js b/grunt/bs-raw-files-generator.js
index 39224e4e2..cdb572b70 100644
--- a/grunt/bs-raw-files-generator.js
+++ b/grunt/bs-raw-files-generator.js
@@ -1,7 +1,7 @@
 /*!
  * Bootstrap Grunt task for generating raw-files.min.js for the Customizer
  * http://getbootstrap.com
- * Copyright 2014-2015 Twitter, Inc.
+ * Copyright 2014-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/grunt/change-version.js b/grunt/change-version.js
index aa155fc53..a4b8671f7 100755
--- a/grunt/change-version.js
+++ b/grunt/change-version.js
@@ -4,7 +4,7 @@
 /* globals Set */
 /*!
  * Script to update version number references in the project.
- * Copyright 2015 Twitter, Inc.
+ * Copyright 2015-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 var fs = require('fs');
diff --git a/js/affix.js b/js/affix.js
index 481987a95..7b0b43c25 100644
--- a/js/affix.js
+++ b/js/affix.js
@@ -2,7 +2,7 @@
  * Bootstrap: affix.js v3.4.0
  * http://getbootstrap.com/javascript/#affix
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/alert.js b/js/alert.js
index 2052d1ad1..2ea7f1a3f 100644
--- a/js/alert.js
+++ b/js/alert.js
@@ -2,7 +2,7 @@
  * Bootstrap: alert.js v3.4.0
  * http://getbootstrap.com/javascript/#alerts
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/button.js b/js/button.js
index e18b8aeae..b62cc5310 100644
--- a/js/button.js
+++ b/js/button.js
@@ -2,7 +2,7 @@
  * Bootstrap: button.js v3.4.0
  * http://getbootstrap.com/javascript/#buttons
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/carousel.js b/js/carousel.js
index bf780fb2c..f2581479a 100644
--- a/js/carousel.js
+++ b/js/carousel.js
@@ -2,7 +2,7 @@
  * Bootstrap: carousel.js v3.4.0
  * http://getbootstrap.com/javascript/#carousel
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/collapse.js b/js/collapse.js
index 5cf64de1c..2817990aa 100644
--- a/js/collapse.js
+++ b/js/collapse.js
@@ -2,7 +2,7 @@
  * Bootstrap: collapse.js v3.4.0
  * http://getbootstrap.com/javascript/#collapse
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/dropdown.js b/js/dropdown.js
index c193f11d3..188275f9c 100644
--- a/js/dropdown.js
+++ b/js/dropdown.js
@@ -2,7 +2,7 @@
  * Bootstrap: dropdown.js v3.4.0
  * http://getbootstrap.com/javascript/#dropdowns
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/modal.js b/js/modal.js
index 329be0538..5cfc6c8c4 100644
--- a/js/modal.js
+++ b/js/modal.js
@@ -2,7 +2,7 @@
  * Bootstrap: modal.js v3.4.0
  * http://getbootstrap.com/javascript/#modals
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/popover.js b/js/popover.js
index a61f2b8d1..f50761212 100644
--- a/js/popover.js
+++ b/js/popover.js
@@ -2,7 +2,7 @@
  * Bootstrap: popover.js v3.4.0
  * http://getbootstrap.com/javascript/#popovers
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/scrollspy.js b/js/scrollspy.js
index fd3e9aff1..335583ff2 100644
--- a/js/scrollspy.js
+++ b/js/scrollspy.js
@@ -2,7 +2,7 @@
  * Bootstrap: scrollspy.js v3.4.0
  * http://getbootstrap.com/javascript/#scrollspy
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/tab.js b/js/tab.js
index 4f9ad9ff9..66d2f0487 100644
--- a/js/tab.js
+++ b/js/tab.js
@@ -2,7 +2,7 @@
  * Bootstrap: tab.js v3.4.0
  * http://getbootstrap.com/javascript/#tabs
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/tooltip.js b/js/tooltip.js
index f7b0d00e7..b0e328746 100644
--- a/js/tooltip.js
+++ b/js/tooltip.js
@@ -3,7 +3,7 @@
  * http://getbootstrap.com/javascript/#tooltip
  * Inspired by the original jQuery.tipsy by Jason Frame
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/transition.js b/js/transition.js
index 180132059..49bd83623 100644
--- a/js/transition.js
+++ b/js/transition.js
@@ -2,7 +2,7 @@
  * Bootstrap: transition.js v3.4.0
  * http://getbootstrap.com/javascript/#transitions
  * ========================================================================
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/less/bootstrap.less b/less/bootstrap.less
index 88f7802de..7f601e765 100644
--- a/less/bootstrap.less
+++ b/less/bootstrap.less
@@ -1,6 +1,6 @@
 /*!
  * Bootstrap v3.4.0 (http://getbootstrap.com)
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/less/theme.less b/less/theme.less
index 6308fd84c..cbdc030e9 100644
--- a/less/theme.less
+++ b/less/theme.less
@@ -2,7 +2,7 @@
 
 /*!
  * Bootstrap v3.4.0 (http://getbootstrap.com)
- * Copyright 2011-2016 Twitter, Inc.
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/nuget/bootstrap.less.nuspec b/nuget/bootstrap.less.nuspec
index 20bc8d545..4a2d23755 100644
--- a/nuget/bootstrap.less.nuspec
+++ b/nuget/bootstrap.less.nuspec
@@ -13,7 +13,7 @@
     <projectUrl>http://getbootstrap.com</projectUrl>
     <iconUrl>http://getbootstrap.com/apple-touch-icon.png</iconUrl>
     <licenseUrl>https://github.com/twbs/bootstrap/blob/master/LICENSE</licenseUrl>
-    <copyright>Copyright 2016</copyright>
+    <copyright>Copyright 2018</copyright>
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <dependencies>
       <dependency id="jQuery" version="[1.9.1,4)" />
diff --git a/nuget/bootstrap.nuspec b/nuget/bootstrap.nuspec
index f62029d7f..254c2e729 100644
--- a/nuget/bootstrap.nuspec
+++ b/nuget/bootstrap.nuspec
@@ -13,7 +13,7 @@
     <projectUrl>http://getbootstrap.com</projectUrl>
     <iconUrl>http://getbootstrap.com/apple-touch-icon.png</iconUrl>
     <licenseUrl>https://github.com/twbs/bootstrap/blob/master/LICENSE</licenseUrl>
-    <copyright>Copyright 2016</copyright>
+    <copyright>Copyright 2018</copyright>
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <dependencies>
       <dependency id="jQuery" version="[1.9.1,4)" />