diff --git a/pkgs/development/tools/misc/cwebbin/default.nix b/pkgs/development/tools/misc/cwebbin/default.nix
index f4d9de184e3..a952475b967 100644
--- a/pkgs/development/tools/misc/cwebbin/default.nix
+++ b/pkgs/development/tools/misc/cwebbin/default.nix
@@ -12,7 +12,7 @@ stdenv.mkDerivation rec {
   };
 
   cweb = fetchurl {
-    url = https://www.ctan.org/tex-archive/web/c_cpp/cweb/cweb.tar.gz;
+    url = https://www.ctan.org/tex-archive/web/c_cpp/cweb/cweb-3.64ah.tgz;
     sha256 = "1hdzxfzaibnjxjzgp6d2zay8nsarnfy9hfq55hz1bxzzl23n35aj";
   };