diff --git a/pl.spec b/pl.spec
index ee8162b..5b0045f 100644
--- a/pl.spec
+++ b/pl.spec
@@ -75,7 +75,7 @@ Summary:    SWI-Prolog - Edinburgh compatible Prolog compiler
 #bench/simple_analyzer.pl               Free for non-commercial
 #man/txt/dvi2tty/dvi2tty.c              Free for non-commercial
 License:    (GPLv2+ with exceptions or Artistic 2.0) and (GPL+ or Artistic) and (BSD or GPL+) and TCL and UCD and MIT and BSD and Public Domain
-URL:        http://www.swi-prolog.org/
+URL:        https://www.swi-prolog.org/
 # Source0: %%{url}download/stable/src/swipl-%%{version}.tar.gz
 # To create the repackaged archive, use ./repackage.sh %%{version}
 Source0:    swipl-%{version}_repackaged.tar.gz