diff --git a/pkgs/top-level/all-packages.nix b/pkgs/top-level/all-packages.nix
index 066ae06f22ad..a56ed5cab4cf 100644
--- a/pkgs/top-level/all-packages.nix
+++ b/pkgs/top-level/all-packages.nix
@@ -21266,6 +21266,8 @@ in
 
   smallwm = callPackage ../applications/window-managers/smallwm { };
 
+  smos = callPackage ../applications/misc/smos { };
+
   spectrwm = callPackage ../applications/window-managers/spectrwm { };
 
   spectral = qt5.callPackage ../applications/networking/instant-messengers/spectral { };