diff --git a/pkgs/applications/networking/instant-messengers/pantalaimon/default.nix b/pkgs/applications/networking/instant-messengers/pantalaimon/default.nix
index 6699764f2272..dbe944d189b6 100644
--- a/pkgs/applications/networking/instant-messengers/pantalaimon/default.nix
+++ b/pkgs/applications/networking/instant-messengers/pantalaimon/default.nix
@@ -34,7 +34,9 @@ buildPythonApplication rec {
     peewee
     prompt-toolkit
     setuptools
-  ] ++ lib.optionals enableDbusUi [
+  ]
+  ++ matrix-nio.optional-dependencies.e2e
+  ++ lib.optionals enableDbusUi [
       dbus-python
       notify2
       pygobject3