diff --git a/pkgs/development/libraries/libpsl/default.nix b/pkgs/development/libraries/libpsl/default.nix
index fdc352869f0a..fb9e5b12bc61 100644
--- a/pkgs/development/libraries/libpsl/default.nix
+++ b/pkgs/development/libraries/libpsl/default.nix
@@ -31,7 +31,7 @@ stdenv.mkDerivation rec {
     lzip
     pkgconfig
     python3
-    valgrind
+    (stdenv.lib.optionalString (!stdenv.isDarwin) valgrind)
     libxslt
   ];