diff --git a/modules/hosts/yggdrasil/default.nix b/modules/hosts/yggdrasil/default.nix
index 6cde537..5f468da 100644
--- a/modules/hosts/yggdrasil/default.nix
+++ b/modules/hosts/yggdrasil/default.nix
@@ -34,6 +34,7 @@ topLevel: {
         osu-lazer-bin
 
         piper
+        ghc # for maths
       ];
 
       services.ratbagd.enable = true;