diff --git a/README.md b/README.md
index 3718a6f..3dc1b0e 100644
--- a/README.md
+++ b/README.md
@@ -54,9 +54,9 @@ WITHOUT ANY WARRANTY without even the implied warranty of MERCHANTABILITY or
 FITNESS FOR A PARTICULAR PURPOSE.
 
 
-[cranVersion]: http://www.r-pkg.org/badges/version/touch
+[cranVersion]: https://www.r-pkg.org/badges/version/touch
 [cran]: https://CRAN.R-project.org/package=touch
 [travis]: https://travis-ci.org/wenjie2wang/touch
 [travis-master]: https://travis-ci.org/wenjie2wang/touch.svg?branch=master
 [travis-dev]: https://travis-ci.org/wenjie2wang/touch.svg?branch=dev
-[gpl]: http://www.gnu.org/licenses/
+[gpl]: https://www.gnu.org/licenses/
diff --git a/docs/index.html b/docs/index.html
index 3c375a0..e303995 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -102,7 +102,7 @@ <h2 class="hasAnchor">
 <div id="license" class="section level2">
 <h2 class="hasAnchor">
 <a href="#license" class="anchor"></a>License</h2>
-<p>The R package touch is free software: You can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version (at your option). See the <a href="http://www.gnu.org/licenses/">GNU General Public License</a> for details.</p>
+<p>The R package touch is free software: You can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or any later version (at your option). See the <a href="https://www.gnu.org/licenses/">GNU General Public License</a> for details.</p>
 <p>The R package touch is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.</p>
 </div>
 </div>
@@ -144,7 +144,7 @@ <h2>Developers</h2>
   <div class="dev-status">
 <h2>Dev status</h2>
 <ul class="list-unstyled">
-<li><a href="https://CRAN.R-project.org/package=touch"><img src="http://www.r-pkg.org/badges/version/touch" alt="CRAN_Status_Badge"></a></li>
+<li><a href="https://CRAN.R-project.org/package=touch"><img src="https://www.r-pkg.org/badges/version/touch" alt="CRAN_Status_Badge"></a></li>
 <li><a href="https://travis-ci.org/wenjie2wang/touch"><img src="https://travis-ci.org/wenjie2wang/touch.svg?branch=master" alt="Build Status"></a></li>
 </ul>
 </div>