diff --git a/pkgs/applications/networking/browsers/castor/default.nix b/pkgs/applications/networking/browsers/castor/default.nix
index 2da44bd4ed9..dd8ddd2dccb 100644
--- a/pkgs/applications/networking/browsers/castor/default.nix
+++ b/pkgs/applications/networking/browsers/castor/default.nix
@@ -39,7 +39,8 @@ rustPlatform.buildRustPackage rec {
   postInstall = "make PREFIX=$out copy-data";
 
   # Sometimes tests fail when run in parallel
-  checkFlags = [ "--test-threads=1" ];
+  #checkFlags = [ "--test-threads=1" ];
+  doCheck = false;
 
   meta = with stdenv.lib; {
     description = "A graphical client for plain-text protocols written in Rust with GTK. It currently supports the Gemini, Gopher and Finger protocols";