diff --git a/pkgs/build-support/fetchurl/mirrors.nix b/pkgs/build-support/fetchurl/mirrors.nix
index 664e4d67723e..d9e44afb68df 100644
--- a/pkgs/build-support/fetchurl/mirrors.nix
+++ b/pkgs/build-support/fetchurl/mirrors.nix
@@ -21,6 +21,9 @@ rec {
 
   # OSDN (formerly SourceForge.jp).
   osdn = [
+    https://osdn.dl.osdn.jp/
+    https://osdn.mirror.constant.com/
+    https://mirrors.gigenet.com/OSDN/
     https://osdn.dl.sourceforge.jp/
     https://jaist.dl.sourceforge.jp/
   ];