diff --git a/desktop/toolkit/qt6/qt6-serialbus/pspec.xml b/desktop/toolkit/qt6/qt6-serialbus/pspec.xml
index 601272adca..0fb0a19c0f 100755
--- a/desktop/toolkit/qt6/qt6-serialbus/pspec.xml
+++ b/desktop/toolkit/qt6/qt6-serialbus/pspec.xml
@@ -1,5 +1,5 @@
 <?xml version="1.0" ?>
-<!DOCTYPE PISI SYSTEM "http://www.pisilinux.org/projeler/pisi/pisi-spec.dtd">
+<!DOCTYPE PISI SYSTEM "https://www.pisilinux.org/projeler/pisi/pisi-spec.dtd">
 <PISI>
     <Source>
         <Name>qt6-serialbus</Name>