diff --git a/docs/index.html b/docs/index.html
index f3a065882a..3c583c12db 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -31,15 +31,15 @@ The Lazarus Component Library is licensed under a modified GNU Lesser
 General Public License.<br>
 The Lazarus IDE is licensed under the GNU General Public License.<br> <br>
 <a href="https://www.freepascal.org/docs.var">Free Pascal online documentation.</a><br>
-<a href="http://lazarus-ccr.sourceforge.net/docs/rtl">RTL - Free Pascal Run Time Library</a><br>
-<a href="http://lazarus-ccr.sourceforge.net/docs/fcl">FCL - Free Component Library</a><br>
-<a href="http://lazarus-ccr.sourceforge.net/docs/lcl">LCL - Lazarus Component Library</a><br>
+<a href="https://lazarus-ccr.sourceforge.net/docs/rtl">RTL - Free Pascal Run Time Library</a><br>
+<a href="https://lazarus-ccr.sourceforge.net/docs/fcl">FCL - Free Component Library</a><br>
+<a href="https://lazarus-ccr.sourceforge.net/docs/lcl">LCL - Lazarus Component Library</a><br>
 <br>
 <h3>Offline help</h3>
 Many help files are available for download in chm and inf format.<br>
 <ul>
 <li>Viewer for chm files: see <a href="http://wiki.freepascal.org/Installing_Help_in_the_IDE#Installing_CHM_Help_for_The_RTL.2C_FCL_and_LCL_in_the_Lazarus_IDE">Installing CHM help in the IDE</a></li>
-<li>Viewer for inf files: see <a href="http://fpgui.sourceforge.net/docview_ide_integration.shtml">DocView IDE Integration</a>.</li>
+<li>Viewer for inf files: see <a href="https://fpgui.sourceforge.net/docview_ide_integration.shtml">DocView IDE Integration</a>.</li>
 </td> </tr> </tbody>
 </table><big><br>
 </big><br></body></html>