diff --git a/nix/packages.nix b/nix/packages.nix
index 84aa3cc..3a9c8fc 100644
--- a/nix/packages.nix
+++ b/nix/packages.nix
@@ -32,6 +32,7 @@ with pkgs; [
   rtv
 
   # imaging
+  gifsicle
   gimp
 
   # editors