diff --git a/pkgs/development/python-modules/omniorbpy/default.nix b/pkgs/development/python-modules/omniorbpy/default.nix
index 326ccb9a384e..5587f6206f34 100644
--- a/pkgs/development/python-modules/omniorbpy/default.nix
+++ b/pkgs/development/python-modules/omniorbpy/default.nix
@@ -13,7 +13,7 @@ buildPythonPackage rec {
   pyproject = false;
 
   src = fetchurl {
-    url = "http://downloads.sourceforge.net/omniorb/omniORBpy-${version}.tar.bz2";
+    url = "https://downloads.sourceforge.net/omniorb/omniORBpy-${version}.tar.bz2";
     hash = "sha256-y1cX1BKhAbr0MPWYysfWkjGITa5DctjirfPd7rxffrs=";
   };