diff --git a/pkgs/applications/graphics/pbrt/default.nix b/pkgs/applications/graphics/pbrt/default.nix
index 9fdf92a4ae80..587a078e0660 100644
--- a/pkgs/applications/graphics/pbrt/default.nix
+++ b/pkgs/applications/graphics/pbrt/default.nix
@@ -21,7 +21,7 @@ stdenv.mkDerivation {
   buildInputs = [ zlib ];
 
   meta = with lib; {
-    homepage = "http://pbrt.org";
+    homepage = "https://pbrt.org/";
     description = "The renderer described in the third edition of the book 'Physically Based Rendering: From Theory To Implementation'";
     platforms = platforms.linux;
     license = licenses.bsd2;