diff --git a/pkgs/applications/networking/p2p/jesec-rtorrent/default.nix b/pkgs/applications/networking/p2p/jesec-rtorrent/default.nix
index a760a0f96c35..df314b6591c2 100644
--- a/pkgs/applications/networking/p2p/jesec-rtorrent/default.nix
+++ b/pkgs/applications/networking/p2p/jesec-rtorrent/default.nix
@@ -21,6 +21,10 @@ stdenv.mkDerivation rec {
     hash = "sha256-i7c1jSawHshj1kaXl8tdpelIKU24okeg9K5/+ht6t2k=";
   };
 
+  passthru = {
+    inherit libtorrent;
+  };
+
   nativeBuildInputs = [
     cmake
   ];
diff --git a/pkgs/applications/networking/p2p/rakshasa-rtorrent/default.nix b/pkgs/applications/networking/p2p/rakshasa-rtorrent/default.nix
index f166f6d0e29f..fa459137f199 100644
--- a/pkgs/applications/networking/p2p/rakshasa-rtorrent/default.nix
+++ b/pkgs/applications/networking/p2p/rakshasa-rtorrent/default.nix
@@ -27,6 +27,10 @@ stdenv.mkDerivation rec {
     hash = "sha256-HTwAs8dfZVXfLRNiT6QpjKGnuahHfoMfYWqdKkedUL0=";
   };
 
+  passthru = {
+    inherit libtorrent;
+  };
+
   nativeBuildInputs = [
     autoconf-archive
     autoreconfHook