diff --git a/pkgs/servers/mautrix-whatsapp/default.nix b/pkgs/servers/mautrix-whatsapp/default.nix
index 8b4d9ea55399..73db7b96b334 100644
--- a/pkgs/servers/mautrix-whatsapp/default.nix
+++ b/pkgs/servers/mautrix-whatsapp/default.nix
@@ -13,19 +13,8 @@ buildGoModule rec {
 
   buildInputs = [ olm ];
 
-  vendorSha256 = "0ixfawfavv5r1d01d4gmj87vf5vv6p3f7kv4rkhfv48ys0j0437a";
-
-  overrideModAttrs = _: {
-    postBuild = ''
-      rm -r vendor/github.com/chai2010/webp
-      cp -r --reflink=auto ${fetchFromGitHub {
-        owner = "chai2010";
-        repo = "webp";
-        rev = "3da79ec3d682694d42bfd211db18fc1343c07cd7";
-        sha256 = "0gh3g52vz8na153mjmxkl80g3dvrcjw77xpjs1c02vagpj9jyw46";
-      }} vendor/github.com/chai2010/webp
-    '';
-  };
+  vendorSha256 = "05cqwprd1rcciw27wyz7lj1s3zmz2vq093vw1cx3kkjyf6lq8sk6";
+  runVend = true;
 
   meta = with stdenv.lib; {
     homepage = "https://github.com/tulir/mautrix-whatsapp";