diff --git a/pkgs/by-name/ni/ninja/package.nix b/pkgs/by-name/ni/ninja/package.nix
index d1d05942e316..39a2ada4da2a 100644
--- a/pkgs/by-name/ni/ninja/package.nix
+++ b/pkgs/by-name/ni/ninja/package.nix
@@ -52,6 +52,8 @@ stdenv.mkDerivation (finalAttrs: {
     libxslt.bin
   ];
 
+  strictDeps = true;
+
   patches = [
     ./0001-spawn-sh-instead-of-bin-sh.patch
   ]