diff --git a/services/hydra/default.nix b/services/hydra/default.nix
index 7fcfeae..b2f5a3c 100644
--- a/services/hydra/default.nix
+++ b/services/hydra/default.nix
@@ -117,7 +117,7 @@ in {
 
         upload_logs_to_binary_cache = true
 
-        evaluator_workers = 4
+        evaluator_workers = 16
         evaluator_max_memory_size = 4096
         max_concurrent_evals = 1