diff --git a/pkgs/by-name/nc/ncps/package.nix b/pkgs/by-name/nc/ncps/package.nix
index 58c49623c9cc..640b305de913 100644
--- a/pkgs/by-name/nc/ncps/package.nix
+++ b/pkgs/by-name/nc/ncps/package.nix
@@ -22,7 +22,9 @@ let
     ];
 
     vendorHash = "sha256-5QpzU+cy14cdR5Oi2vwA+BbMSTPMXlhyq9RpzbMsRZQ=";
+
     doCheck = true;
+    checkFlags = [ "-race" ];
 
     nativeBuildInputs = [
       dbmate # used for testing