diff --git a/README.md b/README.md
index f8bcdf0..f6c0b43 100644
--- a/README.md
+++ b/README.md
@@ -16,7 +16,7 @@ Slic3r downloads these setting bundles automatically (unless updating is disable
 
 ## Settings for previous / legacy Slic3r versions
 
-This project contains the Slic3r profiles for the 3D printers produced by Prusa Research http://www.prusa3d.com/
+This project contains the Slic3r profiles for the 3D printers produced by Prusa Research https://www.prusa3d.com/
 
 * [Slic3r settings MK2 - Settings for the Original Prusa i3 MK2 & MK2S & MK2MM & MK3](https://github.com/prusa3d/Slic3r-settings/tree/master/old/Slic3r%20settings%20MK2S%20MK2MM%20and%20MK3)
 * [Slic3r settings 175 - Settings for the Prusa i3 with a 1.75mm filament extruder](https://github.com/prusa3d/Slic3r-settings/tree/master/old/Slic3r%20settings%20175)