diff --git a/pkgs/by-name/ki/kin-openapi/package.nix b/pkgs/by-name/ki/kin-openapi/package.nix
index 0a3abd0c1d464a..6515189f95d2ff 100644
--- a/pkgs/by-name/ki/kin-openapi/package.nix
+++ b/pkgs/by-name/ki/kin-openapi/package.nix
@@ -25,7 +25,7 @@ buildGoModule rec {
     in
     [ "-skip=^${builtins.concatStringsSep "$|^" skippedTests}$" ];
 
-  subPackage = "cmd/validate";
+  subPackages = [ "cmd/validate" ];
 
   meta = {
     mainProgram = "validate";