diff --git a/modules/communication.nix b/modules/communication.nix
index c3e74a2..45b062b 100644
--- a/modules/communication.nix
+++ b/modules/communication.nix
@@ -97,6 +97,7 @@ in {
   systemd.services.matrix-as-signal = {
     requires = [ "signald.service" ];
     after = [ "signald.service" ];
+    path = [ ffmpeg ];
   };
 
 }