diff --git a/pkgs/nix-portable/default.nix b/pkgs/nix-portable/default.nix
index a1b3c6e7..232547ab 100644
--- a/pkgs/nix-portable/default.nix
+++ b/pkgs/nix-portable/default.nix
@@ -49,7 +49,7 @@ let
     in
     stdenv.mkDerivation {
       name = "nix-portable-store-tarball";
-      nativeBuildInputs = [ perl zstd ];
+      nativeBuildInputs = [ perl pkgs.zstd ];
       exportReferencesGraph = map (x: [("closure-" + baseNameOf x) x]) targets;
       buildCommand = ''
         storePaths=$(cat ${closureInfo}/store-paths)
@@ -100,7 +100,9 @@ let
     export PATH="${out}/bin:\$PATH"
   '';
 
-  caBundleZstd = pkgs.runCommand "cacerts" {} "cat ${cacert}/etc/ssl/certs/ca-bundle.crt | ${inp.zstd}/bin/zstd -19 > $out";
+  caBundleZstd = pkgs.runCommand "cacerts" {
+    nativeBuildInputs = [ pkgs.zstd ];
+  } "cat ${cacert}/etc/ssl/certs/ca-bundle.crt | zstd -19 > $out";
 
   bwrap = packStaticBin "${inp.bwrap}/bin/bwrap";
   nixStatic = packStaticBin "${inp.nixStatic}/bin/nix";