diff --git a/desktop/toolkit/qt6/qt6-graphs/pspec.xml b/desktop/toolkit/qt6/qt6-graphs/pspec.xml
index 6724bca5d2..26cb686788 100644
--- a/desktop/toolkit/qt6/qt6-graphs/pspec.xml
+++ b/desktop/toolkit/qt6/qt6-graphs/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-graphs</Name>