diff --git a/pkgs/development/python-modules/magic-wormhole-transit-relay/default.nix b/pkgs/development/python-modules/magic-wormhole-transit-relay/default.nix
new file mode 100644
index 00000000000..e6be19198ef
--- /dev/null
+++ b/pkgs/development/python-modules/magic-wormhole-transit-relay/default.nix
@@ -0,0 +1,25 @@
+{ lib, buildPythonPackage, fetchPypi, twisted, mock }:
+
+buildPythonPackage rec {
+  pname = "magic-wormhole-transit-relay";
+  version = "0.1.1";
+
+  src = fetchPypi {
+    inherit pname version;
+    sha256 = "faac36266c72745102a1a8b93abc5b25feed1be5bca7b29968a156966c312567";
+  };
+
+  propagatedBuildInputs = [ twisted ];
+
+  checkInputs = [ mock ];
+
+  checkPhase = ''
+    python -m twisted.trial wormhole_transit_relay
+  '';
+
+  meta = with lib; {
+    description = "Transit Relay server for Magic-Wormhole";
+    homepage = https://github.com/warner/magic-wormhole-transit-relay;
+    license = licenses.mit;
+  };
+}
diff --git a/pkgs/top-level/python-packages.nix b/pkgs/top-level/python-packages.nix
index bdfa2c80d91..ac0c79b76cf 100644
--- a/pkgs/top-level/python-packages.nix
+++ b/pkgs/top-level/python-packages.nix
@@ -18170,6 +18170,8 @@ EOF
 
   magic-wormhole = callPackage ../development/python-modules/magic-wormhole { };
 
+  magic-wormhole-transit-relay = callPackage ../development/python-modules/magic-wormhole-transit-relay { };
+
   wsgiproxy2 = buildPythonPackage rec {
     name = "WSGIProxy2-0.4.2";