diff --git a/LICENSE b/LICENSE
index 1381cb2be4..86f4b8ca04 100644
--- a/LICENSE
+++ b/LICENSE
@@ -1,7 +1,7 @@
 The MIT License (MIT)
 
-Copyright (c) 2011-2017 Twitter, Inc.
-Copyright (c) 2011-2017 The Bootstrap Authors
+Copyright (c) 2011-2018 Twitter, Inc.
+Copyright (c) 2011-2018 The Bootstrap Authors
 
 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 84f55adf09..713d3dfa8e 100644
--- a/README.md
+++ b/README.md
@@ -164,4 +164,4 @@ See [the Releases section of our GitHub project](https://github.com/twbs/bootstr
 
 ## Copyright and license
 
-Code and documentation copyright 2011-2017 the [Bootstrap Authors](https://github.com/twbs/bootstrap/graphs/contributors) and [Twitter, Inc.](https://twitter.com) 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 the [Bootstrap Authors](https://github.com/twbs/bootstrap/graphs/contributors) and [Twitter, Inc.](https://twitter.com) 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/assets/js/src/application.js b/assets/js/src/application.js
index 01c9eef55b..a067c9fb59 100644
--- a/assets/js/src/application.js
+++ b/assets/js/src/application.js
@@ -4,8 +4,8 @@
 
 /*!
  * JavaScript for Bootstrap's docs (https://getbootstrap.com)
- * Copyright 2011-2017 The Bootstrap Authors
- * Copyright 2011-2017 Twitter, Inc.
+ * Copyright 2011-2018 The Bootstrap Authors
+ * 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/assets/scss/docs.scss b/assets/scss/docs.scss
index 811b39c748..7bc1196b76 100644
--- a/assets/scss/docs.scss
+++ b/assets/scss/docs.scss
@@ -1,7 +1,7 @@
 /*!
  * Bootstrap Docs (https://getbootstrap.com)
- * Copyright 2011-2017 The Bootstrap Authors
- * Copyright 2011-2017 Twitter, Inc.
+ * Copyright 2011-2018 The Bootstrap Authors
+ * 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/build/change-version.js b/build/change-version.js
index dc0b0c5dfd..25283c44ab 100755
--- a/build/change-version.js
+++ b/build/change-version.js
@@ -4,8 +4,8 @@
 
 /*!
  * Script to update version number references in the project.
- * Copyright 2017 The Bootstrap Authors
- * Copyright 2017 Twitter, Inc.
+ * Copyright 2017-2018 The Bootstrap Authors
+ * Copyright 2017-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/build/generate-sri.js b/build/generate-sri.js
index 2ace46e05f..f6790e4404 100644
--- a/build/generate-sri.js
+++ b/build/generate-sri.js
@@ -5,8 +5,8 @@
  * Remember to use the same vendor files as the CDN ones,
  * otherwise the hashes won't match!
  *
- * Copyright 2017 The Bootstrap Authors
- * Copyright 2017 Twitter, Inc.
+ * Copyright 2017-2018 The Bootstrap Authors
+ * Copyright 2017-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/build/lint-vars.js b/build/lint-vars.js
index 6164392e5d..21dc556969 100644
--- a/build/lint-vars.js
+++ b/build/lint-vars.js
@@ -3,8 +3,8 @@
 /*!
  * Script to find unused Sass variables.
  *
- * Copyright 2017 The Bootstrap Authors
- * Copyright 2017 Twitter, Inc.
+ * Copyright 2017-2018 The Bootstrap Authors
+ * Copyright 2017-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/build/saucelabs-unit-test.js b/build/saucelabs-unit-test.js
index 3ec68a95b2..95b68345c0 100644
--- a/build/saucelabs-unit-test.js
+++ b/build/saucelabs-unit-test.js
@@ -1,7 +1,7 @@
 /*!
  * Script to run our Sauce Labs tests.
- * Copyright 2017 The Bootstrap Authors
- * Copyright 2017 Twitter, Inc.
+ * Copyright 2017-2018 The Bootstrap Authors
+ * Copyright 2017-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/build/vnu-jar.js b/build/vnu-jar.js
index eefcb64ebf..9a1d9fa12c 100644
--- a/build/vnu-jar.js
+++ b/build/vnu-jar.js
@@ -2,8 +2,8 @@
 
 /*!
  * Script to run vnu-jar if Java is available.
- * Copyright 2017 The Bootstrap Authors
- * Copyright 2017 Twitter, Inc.
+ * Copyright 2017-2018 The Bootstrap Authors
+ * Copyright 2017-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/docs/4.0/examples/carousel/index.html b/docs/4.0/examples/carousel/index.html
index 9d3ef4ffdb..338bcd07a5 100644
--- a/docs/4.0/examples/carousel/index.html
+++ b/docs/4.0/examples/carousel/index.html
@@ -171,7 +171,7 @@
       <!-- FOOTER -->
       <footer class="container">
         <p class="float-right"><a href="#">Back to top</a></p>
-        <p>&copy; 2017 Company, Inc. &middot; <a href="#">Privacy</a> &middot; <a href="#">Terms</a></p>
+        <p>&copy; 2017-2018 Company, Inc. &middot; <a href="#">Privacy</a> &middot; <a href="#">Terms</a></p>
       </footer>
     </main>
 
diff --git a/docs/4.0/examples/checkout/index.html b/docs/4.0/examples/checkout/index.html
index 43a16e0f5f..2c346b1671 100644
--- a/docs/4.0/examples/checkout/index.html
+++ b/docs/4.0/examples/checkout/index.html
@@ -225,7 +225,7 @@
       </div>
 
       <footer class="my-5 pt-5 text-muted text-center text-small">
-        <p class="mb-1">&copy; 2017 Company Name</p>
+        <p class="mb-1">&copy; 2017-2018 Company Name</p>
         <ul class="list-inline">
           <li class="list-inline-item"><a href="#">Privacy</a></li>
           <li class="list-inline-item"><a href="#">Terms</a></li>
diff --git a/docs/4.0/examples/floating-labels/index.html b/docs/4.0/examples/floating-labels/index.html
index b8a59bbdb9..ebe38f3708 100644
--- a/docs/4.0/examples/floating-labels/index.html
+++ b/docs/4.0/examples/floating-labels/index.html
@@ -40,7 +40,7 @@
         </label>
       </div>
       <button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
-      <p class="mt-5 mb-3 text-muted text-center">&copy; 2017</p>
+      <p class="mt-5 mb-3 text-muted text-center">&copy; 2017-2018</p>
     </form>
   </body>
 </html>
diff --git a/docs/4.0/examples/jumbotron/index.html b/docs/4.0/examples/jumbotron/index.html
index c4932cfb80..03b4826a97 100644
--- a/docs/4.0/examples/jumbotron/index.html
+++ b/docs/4.0/examples/jumbotron/index.html
@@ -89,7 +89,7 @@
     </main>
 
     <footer class="container">
-      <p>&copy; Company 2017</p>
+      <p>&copy; Company 2017-2018</p>
     </footer>
 
     <!-- Bootstrap core JavaScript
diff --git a/docs/4.0/examples/pricing/index.html b/docs/4.0/examples/pricing/index.html
index 63b52600cb..cf5a9f35a1 100644
--- a/docs/4.0/examples/pricing/index.html
+++ b/docs/4.0/examples/pricing/index.html
@@ -87,7 +87,7 @@
         <div class="row">
           <div class="col-12 col-md">
             <img class="mb-2" src="https://getbootstrap.com/assets/brand/bootstrap-solid.svg" alt="" width="24" height="24">
-            <small class="d-block mb-3 text-muted">&copy; 2017</small>
+            <small class="d-block mb-3 text-muted">&copy; 2017-2018</small>
           </div>
           <div class="col-6 col-md">
             <h5>Features</h5>
diff --git a/docs/4.0/examples/product/index.html b/docs/4.0/examples/product/index.html
index 4ea908d419..76fac4516f 100644
--- a/docs/4.0/examples/product/index.html
+++ b/docs/4.0/examples/product/index.html
@@ -115,7 +115,7 @@
       <div class="row">
         <div class="col-12 col-md">
           <svg xmlns="http://www.w3.org/2000/svg" width="24" height="24" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="d-block mb-2"><circle cx="12" cy="12" r="10"></circle><line x1="14.31" y1="8" x2="20.05" y2="17.94"></line><line x1="9.69" y1="8" x2="21.17" y2="8"></line><line x1="7.38" y1="12" x2="13.12" y2="2.06"></line><line x1="9.69" y1="16" x2="3.95" y2="6.06"></line><line x1="14.31" y1="16" x2="2.83" y2="16"></line><line x1="16.62" y1="12" x2="10.88" y2="21.94"></line></svg>
-          <small class="d-block mb-3 text-muted">&copy; 2017</small>
+          <small class="d-block mb-3 text-muted">&copy; 2017-2018</small>
         </div>
         <div class="col-6 col-md">
           <h5>Features</h5>
diff --git a/docs/4.0/examples/sign-in/index.html b/docs/4.0/examples/sign-in/index.html
index 037161c816..0a4d90cbdc 100644
--- a/docs/4.0/examples/sign-in/index.html
+++ b/docs/4.0/examples/sign-in/index.html
@@ -30,7 +30,7 @@
         </label>
       </div>
       <button class="btn btn-lg btn-primary btn-block" type="submit">Sign in</button>
-      <p class="mt-5 mb-3 text-muted">&copy; 2017</p>
+      <p class="mt-5 mb-3 text-muted">&copy; 2017-2018</p>
     </form>
   </body>
 </html>
diff --git a/nuget/bootstrap.nuspec b/nuget/bootstrap.nuspec
index 3155d099b8..285c548846 100644
--- a/nuget/bootstrap.nuspec
+++ b/nuget/bootstrap.nuspec
@@ -13,7 +13,7 @@
     <projectUrl>https://getbootstrap.com/</projectUrl>
     <iconUrl>https://getbootstrap.com/assets/img/favicons/apple-touch-icon.png</iconUrl>
     <licenseUrl>https://github.com/twbs/bootstrap/blob/master/LICENSE</licenseUrl>
-    <copyright>Copyright 2017</copyright>
+    <copyright>Copyright 2017-2018</copyright>
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <dependencies>
       <dependency id="jQuery" version="[3.0.0,4)" />
diff --git a/nuget/bootstrap.sass.nuspec b/nuget/bootstrap.sass.nuspec
index 64c19cdb2f..0062653d11 100644
--- a/nuget/bootstrap.sass.nuspec
+++ b/nuget/bootstrap.sass.nuspec
@@ -13,7 +13,7 @@
     <projectUrl>https://getbootstrap.com/</projectUrl>
     <iconUrl>https://getbootstrap.com/assets/img/favicons/apple-touch-icon.png</iconUrl>
     <licenseUrl>https://github.com/twbs/bootstrap/blob/master/LICENSE</licenseUrl>
-    <copyright>Copyright 2017</copyright>
+    <copyright>Copyright 2017-2018</copyright>
     <requireLicenseAcceptance>false</requireLicenseAcceptance>
     <dependencies>
       <dependency id="jQuery" version="[3.0.0,4)" />
diff --git a/scss/bootstrap-grid.scss b/scss/bootstrap-grid.scss
index fec2766423..6fa30944b7 100644
--- a/scss/bootstrap-grid.scss
+++ b/scss/bootstrap-grid.scss
@@ -1,7 +1,7 @@
 /*!
  * Bootstrap Grid v4.0.0-beta.3 (https://getbootstrap.com)
- * Copyright 2011-2017 The Bootstrap Authors
- * Copyright 2011-2017 Twitter, Inc.
+ * Copyright 2011-2018 The Bootstrap Authors
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */
 
diff --git a/scss/bootstrap-reboot.scss b/scss/bootstrap-reboot.scss
index 60c0df2e92..05e81ceea5 100644
--- a/scss/bootstrap-reboot.scss
+++ b/scss/bootstrap-reboot.scss
@@ -1,7 +1,7 @@
 /*!
  * Bootstrap Reboot v4.0.0-beta.3 (https://getbootstrap.com)
- * Copyright 2011-2017 The Bootstrap Authors
- * Copyright 2011-2017 Twitter, Inc.
+ * Copyright 2011-2018 The Bootstrap Authors
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  * Forked from Normalize.css, licensed MIT (https://github.com/necolas/normalize.css/blob/master/LICENSE.md)
  */
diff --git a/scss/bootstrap.scss b/scss/bootstrap.scss
index 42b2c1ab24..28ac24c57b 100644
--- a/scss/bootstrap.scss
+++ b/scss/bootstrap.scss
@@ -1,7 +1,7 @@
 /*!
  * Bootstrap v4.0.0-beta.3 (https://getbootstrap.com)
- * Copyright 2011-2017 The Bootstrap Authors
- * Copyright 2011-2017 Twitter, Inc.
+ * Copyright 2011-2018 The Bootstrap Authors
+ * Copyright 2011-2018 Twitter, Inc.
  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/master/LICENSE)
  */