diff --git a/FormAbout.cs b/FormAbout.cs
index b34408f..4ff8fec 100644
--- a/FormAbout.cs
+++ b/FormAbout.cs
@@ -110,7 +110,7 @@ private void InitializeComponent()
             this.labelURL.Name = "labelURL";
             this.labelURL.Size = new System.Drawing.Size(200, 58);
             this.labelURL.TabIndex = 4;
-            this.labelURL.Text = "http://www.xs4all.nl/~jornbr/plotreader/";
+            this.labelURL.Text = "https://www.xs4all.nl/~jornbr/plotreader/";
             this.labelURL.Click += new System.EventHandler(this.labelURL_Click);
             // 
             // FormAbout
diff --git a/Info.cs b/Info.cs
index 12c98be..9597a07 100644
--- a/Info.cs
+++ b/Info.cs
@@ -11,7 +11,7 @@ static public string URL
 		{
 			get 
 			{
-				return "http://www.xs4all.nl/~jornbr/plotreader/";
+				return "https://www.xs4all.nl/~jornbr/plotreader/";
 			}
 		}
 	}
diff --git a/Setup.vdproj b/Setup.vdproj
index 4bf7f18..d3f5ca7 100644
--- a/Setup.vdproj
+++ b/Setup.vdproj
@@ -236,13 +236,13 @@
         "ProductVersion" = "8:1.56.0"
         "Manufacturer" = "8:Jorn Bruggeman"
         "ARPHELPTELEPHONE" = "8:"
-        "ARPHELPLINK" = "8:http://www.xs4all.nl/~jornbr/plotreader/"
+        "ARPHELPLINK" = "8:https://www.xs4all.nl/~jornbr/plotreader/"
         "Title" = "8:PlotReader setup"
         "Subject" = "8:"
         "ARPCONTACT" = "8:Jorn Bruggeman"
         "Keywords" = "8:"
         "ARPCOMMENTS" = "8:"
-        "ARPURLINFOABOUT" = "8:http://www.xs4all.nl/~jornbr/"
+        "ARPURLINFOABOUT" = "8:https://www.xs4all.nl/~jornbr/"
         "ARPPRODUCTICON" = "8:_29FACFFA54C240FF9ED866056EA7A42C"
         "ARPIconIndex" = "3:32512"
         "SearchPath" = "8:"