diff --git a/pkgs/shells/zsh/default.nix b/pkgs/shells/zsh/default.nix
index fda3e77c61f4..261dbf12f8e5 100644
--- a/pkgs/shells/zsh/default.nix
+++ b/pkgs/shells/zsh/default.nix
@@ -80,4 +80,8 @@ EOF
     maintainers = with stdenv.lib.maintainers; [ chaoflow pSub ];
     platforms = stdenv.lib.platforms.unix;
   };
+
+  passthru = {
+    shellPath = "/bin/zsh";
+  };
 }