diff --git a/pkgs/tools/security/pass/default.nix b/pkgs/tools/security/pass/default.nix
index c03029232ac..0480962fb96 100644
--- a/pkgs/tools/security/pass/default.nix
+++ b/pkgs/tools/security/pass/default.nix
@@ -65,6 +65,7 @@ stdenv.mkDerivation rec {
     getopt
     git
     gnupg
+    pwgen
     tree
     which
   ] ++ ifEnable x11Support [ dmenu xclip xdotool ]);