diff --git a/Gruntfile.js b/Gruntfile.js
index c7bfac58f541..05d88c28749a 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -1,7 +1,7 @@
 /*!
  * Bootstrap's Gruntfile
  * https://getbootstrap.com/
- * Copyright 2013-2018 Twitter, Inc.
+ * Copyright 2013-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/LICENSE b/LICENSE
index 6ca0ceecc5d7..e2640928b3e8 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,6 +1,6 @@
 The MIT License (MIT)
 
-Copyright (c) 2011-2018 Twitter, Inc.
+Copyright (c) 2011-2019 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 4a0454298f0f..84ae6f45d2cd 100644
--- a/README.md
+++ b/README.md
@@ -146,4 +146,4 @@ Thanks to [BrowserStack](https://www.browserstack.com/) for providing the infras
 
 ## Copyright and 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).
+Code and documentation copyright 2011-2019 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 758530f769a8..bfcc00e2e9e4 100644
--- a/docs/_includes/getting-started/browser-device-support.html
+++ b/docs/_includes/getting-started/browser-device-support.html
@@ -158,7 +158,7 @@ <h2 id="support-ie10-width">Internet Explorer 10 in Windows 8 and Windows Phone
 {% endhighlight %}
 
 {% highlight js %}
-// Copyright 2014-2018 Twitter, Inc.
+// Copyright 2014-2019 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/css/docs.css b/docs/assets/css/docs.css
index 73697fb222fc..b9c6e860f708 100644
--- a/docs/assets/css/docs.css
+++ b/docs/assets/css/docs.css
@@ -1,6 +1,6 @@
 /*!
  * Bootstrap Docs (https://getbootstrap.com/)
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 Twitter, Inc.
  * Licensed under the Creative Commons Attribution 3.0 Unported License. For
  * details, see https://creativecommons.org/licenses/by/3.0/.
  */
@@ -227,7 +227,7 @@
 }
 /*!
  * IE10 viewport hack for Surface/desktop Windows 8 bug
- * Copyright 2014-2018 Twitter, Inc.
+ * Copyright 2014-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 @-ms-viewport {
diff --git a/docs/assets/css/ie10-viewport-bug-workaround.css b/docs/assets/css/ie10-viewport-bug-workaround.css
index bb9e96f2ec08..666919755cd7 100644
--- a/docs/assets/css/ie10-viewport-bug-workaround.css
+++ b/docs/assets/css/ie10-viewport-bug-workaround.css
@@ -1,6 +1,6 @@
 /*!
  * IE10 viewport hack for Surface/desktop Windows 8 bug
- * Copyright 2014-2018 Twitter, Inc.
+ * Copyright 2014-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 @-ms-viewport {
diff --git a/docs/assets/js/ie-emulation-modes-warning.js b/docs/assets/js/ie-emulation-modes-warning.js
index e19b70fa0904..4c4fc9e973eb 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 2014-2018 Twitter, Inc.
+ * Copyright 2014-2019 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 c09f89ba5109..673a71ad0b9c 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 2014-2018 Twitter, Inc.
+ * Copyright 2014-2019 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 fb1f1bfabdc6..9e9bd587d651 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 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 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 80a7e605109d..7b2bf0ed9915 100644
--- a/docs/assets/js/src/application.js
+++ b/docs/assets/js/src/application.js
@@ -4,7 +4,7 @@
 
 /*!
  * JavaScript for Bootstrap's docs (https://getbootstrap.com/)
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 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 b528b2decce9..a6382fd0f4e0 100644
--- a/docs/assets/js/src/customizer.js
+++ b/docs/assets/js/src/customizer.js
@@ -1,6 +1,6 @@
 /*!
  * Bootstrap Customizer (https://getbootstrap.com/customize/)
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 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 b7c015f3345e..cfdb2ef45a03 100644
--- a/docs/assets/less/docs.less
+++ b/docs/assets/less/docs.less
@@ -1,6 +1,6 @@
 /*!
  * Bootstrap Docs (https://getbootstrap.com/)
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 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 042cd31fa809..7e9dc5d1f58c 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 2014-2018 Twitter, Inc.
+ * Copyright 2014-2019 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 ac24ea6ce25e..04e575a9abc0 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
  * https://getbootstrap.com/
- * Copyright 2014-2018 Twitter, Inc.
+ * Copyright 2014-2019 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 ea518f9b1816..a970e338e117 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
  * https://getbootstrap.com/
- * Copyright 2014-2018 Twitter, Inc.
+ * Copyright 2014-2019 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 98a3cc530f56..8fa4e763e193 100644
--- a/grunt/bs-lessdoc-parser.js
+++ b/grunt/bs-lessdoc-parser.js
@@ -1,7 +1,7 @@
 /*!
  * Bootstrap Grunt task for parsing Less docstrings
  * https://getbootstrap.com/
- * Copyright 2014-2018 Twitter, Inc.
+ * Copyright 2014-2019 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 0484dd3a09ff..744f7d77dbe4 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
  * https://getbootstrap.com/
- * Copyright 2014-2018 Twitter, Inc.
+ * Copyright 2014-2019 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 a4b8671f78f0..6ae08c85420b 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 2015-2018 Twitter, Inc.
+ * Copyright 2015-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 var fs = require('fs');
diff --git a/grunt/generate-sri.js b/grunt/generate-sri.js
index fde5507422cd..4bc7e8703452 100644
--- a/grunt/generate-sri.js
+++ b/grunt/generate-sri.js
@@ -7,8 +7,8 @@
  * Remember to use the same vendor files as the CDN ones,
  * otherwise the hashes won't match!
  *
- * Copyright 2017-2018 The Bootstrap Authors
- * Copyright 2017-2018 Twitter, Inc.
+ * Copyright 2017-2019 The Bootstrap Authors
+ * Copyright 2017-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/js/affix.js b/js/affix.js
index 60608420cbab..8aa38c424ac8 100644
--- a/js/affix.js
+++ b/js/affix.js
@@ -2,7 +2,7 @@
  * Bootstrap: affix.js v3.4.0
  * https://getbootstrap.com/docs/3.4/javascript/#affix
  * ========================================================================
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/alert.js b/js/alert.js
index 362b7b5044ff..03c8b914306d 100644
--- a/js/alert.js
+++ b/js/alert.js
@@ -2,7 +2,7 @@
  * Bootstrap: alert.js v3.4.0
  * https://getbootstrap.com/docs/3.4/javascript/#alerts
  * ========================================================================
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/button.js b/js/button.js
index 8fdf9ddcd0fd..96b379b24ae5 100644
--- a/js/button.js
+++ b/js/button.js
@@ -2,7 +2,7 @@
  * Bootstrap: button.js v3.4.0
  * https://getbootstrap.com/docs/3.4/javascript/#buttons
  * ========================================================================
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/carousel.js b/js/carousel.js
index 020648ceb5a4..d2193bdc51b5 100644
--- a/js/carousel.js
+++ b/js/carousel.js
@@ -2,7 +2,7 @@
  * Bootstrap: carousel.js v3.4.0
  * https://getbootstrap.com/docs/3.4/javascript/#carousel
  * ========================================================================
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/collapse.js b/js/collapse.js
index d87eee5c6d2e..2b726067ed0a 100644
--- a/js/collapse.js
+++ b/js/collapse.js
@@ -2,7 +2,7 @@
  * Bootstrap: collapse.js v3.4.0
  * https://getbootstrap.com/docs/3.4/javascript/#collapse
  * ========================================================================
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/dropdown.js b/js/dropdown.js
index 481e04fd1f46..814ef2811e73 100644
--- a/js/dropdown.js
+++ b/js/dropdown.js
@@ -2,7 +2,7 @@
  * Bootstrap: dropdown.js v3.4.0
  * https://getbootstrap.com/docs/3.4/javascript/#dropdowns
  * ========================================================================
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/modal.js b/js/modal.js
index 9fbce5d9add0..5719e6ca6806 100644
--- a/js/modal.js
+++ b/js/modal.js
@@ -2,7 +2,7 @@
  * Bootstrap: modal.js v3.4.0
  * https://getbootstrap.com/docs/3.4/javascript/#modals
  * ========================================================================
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/popover.js b/js/popover.js
index f72c32af0055..f00625b5d180 100644
--- a/js/popover.js
+++ b/js/popover.js
@@ -2,7 +2,7 @@
  * Bootstrap: popover.js v3.4.0
  * https://getbootstrap.com/docs/3.4/javascript/#popovers
  * ========================================================================
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/scrollspy.js b/js/scrollspy.js
index 487a9fa5befd..821b4e4dce93 100644
--- a/js/scrollspy.js
+++ b/js/scrollspy.js
@@ -2,7 +2,7 @@
  * Bootstrap: scrollspy.js v3.4.0
  * https://getbootstrap.com/docs/3.4/javascript/#scrollspy
  * ========================================================================
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/tab.js b/js/tab.js
index 79511fc669b4..78e9a5aefc88 100644
--- a/js/tab.js
+++ b/js/tab.js
@@ -2,7 +2,7 @@
  * Bootstrap: tab.js v3.4.0
  * https://getbootstrap.com/docs/3.4/javascript/#tabs
  * ========================================================================
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/tooltip.js b/js/tooltip.js
index 223ec0c96cdb..966314855983 100644
--- a/js/tooltip.js
+++ b/js/tooltip.js
@@ -3,7 +3,7 @@
  * https://getbootstrap.com/docs/3.4/javascript/#tooltip
  * Inspired by the original jQuery.tipsy by Jason Frame
  * ========================================================================
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/js/transition.js b/js/transition.js
index a7b7e038b016..f27228ff8fb3 100644
--- a/js/transition.js
+++ b/js/transition.js
@@ -2,7 +2,7 @@
  * Bootstrap: transition.js v3.4.0
  * https://getbootstrap.com/docs/3.4/javascript/#transitions
  * ========================================================================
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * ======================================================================== */
 
diff --git a/less/bootstrap.less b/less/bootstrap.less
index e0a56406967a..506eed06808a 100644
--- a/less/bootstrap.less
+++ b/less/bootstrap.less
@@ -1,6 +1,6 @@
 /*!
  * Bootstrap v3.4.0 (https://getbootstrap.com/)
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/less/theme.less b/less/theme.less
index a41a1f642a93..1101b54ef22c 100644
--- a/less/theme.less
+++ b/less/theme.less
@@ -2,7 +2,7 @@
 
 /*!
  * Bootstrap v3.4.0 (https://getbootstrap.com/)
- * Copyright 2011-2018 Twitter, Inc.
+ * Copyright 2011-2019 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 68edf02ff716..2d64f6ea0062 100644
--- a/nuget/bootstrap.less.nuspec
+++ b/nuget/bootstrap.less.nuspec
@@ -13,7 +13,7 @@
     <projectUrl>https://getbootstrap.com/</projectUrl>
     <iconUrl>https://getbootstrap.com/apple-touch-icon.png</iconUrl>
     <licenseUrl>https://github.com/twbs/bootstrap/blob/master/LICENSE</licenseUrl>
-    <copyright>Copyright 2018</copyright>
+    <copyright>Copyright 2019</copyright>
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <dependencies>
       <dependency id="jQuery" version="[1.9.1,4)" />
diff --git a/nuget/bootstrap.nuspec b/nuget/bootstrap.nuspec
index 4fdea77d29f7..77f79be9d872 100644
--- a/nuget/bootstrap.nuspec
+++ b/nuget/bootstrap.nuspec
@@ -13,7 +13,7 @@
     <projectUrl>https://getbootstrap.com/</projectUrl>
     <iconUrl>https://getbootstrap.com/apple-touch-icon.png</iconUrl>
     <licenseUrl>https://github.com/twbs/bootstrap/blob/master/LICENSE</licenseUrl>
-    <copyright>Copyright 2018</copyright>
+    <copyright>Copyright 2019</copyright>
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <dependencies>
       <dependency id="jQuery" version="[1.9.1,4)" />