diff --git a/pkgs/development/libraries/sundials/default.nix b/pkgs/development/libraries/sundials/default.nix
index 3536ebd586e4..f04b22abe8c6 100644
--- a/pkgs/development/libraries/sundials/default.nix
+++ b/pkgs/development/libraries/sundials/default.nix
@@ -17,8 +17,8 @@ stdenv.mkDerivation rec {
   outputs = [ "out" "examples" ];
 
   src = fetchurl {
-    url = "https://computation.llnl.gov/projects/${pname}/download/${pname}-${version}.tar.gz";
-    sha256 = "jW3QlP7Mu41uzEE0DsFqZfq6yC7UQVAj9tfBwjkOovM=";
+    url = "https://github.com/LLNL/sundials/releases/download/v${version}/sundials-${version}.tar.gz";
+    hash = "sha256-SNp7qoFS3bIq7RsC2C0du0+/6iKs9nY0ARqgMDoQCkM=";
   };
 
   nativeBuildInputs = [ cmake ];