diff --git a/aqt/settings.ini b/aqt/settings.ini
index 0faf319..6fd49de 100644
--- a/aqt/settings.ini
+++ b/aqt/settings.ini
@@ -20,7 +20,7 @@ blacklist:
     http://mirrors.geekpie.club
 fallbacks:
     https://ftp.jaist.ac.jp/pub/qtproject
-    http://ftp1.nluug.nl/languages/qt
+    https://ftp1.nluug.nl/languages/qt
     https://mirrors.dotsrc.org/qtproject
 
 [kde_patches]