diff --git a/pkgs/development/python-modules/mitmproxy/default.nix b/pkgs/development/python-modules/mitmproxy/default.nix
index 032ad1ca8f47..e04490dd4642 100644
--- a/pkgs/development/python-modules/mitmproxy/default.nix
+++ b/pkgs/development/python-modules/mitmproxy/default.nix
@@ -61,6 +61,8 @@ buildPythonPackage rec {
   pythonRelaxDeps = [
     "aioquic"
     "cryptography"
+    "pyperclip"
+    "tornado"
   ];
 
   propagatedBuildInputs = [