diff --git a/pkgs/applications/networking/instant-messengers/signal-desktop/default.nix b/pkgs/applications/networking/instant-messengers/signal-desktop/default.nix
index d7e70b584c21..c5921e645f03 100644
--- a/pkgs/applications/networking/instant-messengers/signal-desktop/default.nix
+++ b/pkgs/applications/networking/instant-messengers/signal-desktop/default.nix
@@ -80,6 +80,7 @@ in stdenv.mkDerivation rec {
 
   runtimeDependencies = [
     systemd.lib
+    libnotify
   ];
 
   unpackPhase = "dpkg-deb -x $src .";