diff --git a/home.nix b/home.nix
index e81d7d8..f81a386 100644
--- a/home.nix
+++ b/home.nix
@@ -139,6 +139,7 @@
     QT_AUTO_SCREEN_SCALE_FACTOR = "1";
     WLR_NO_HARDWARE_CURSORS = "0";
     XCURSOR_SIZE = "24";
+    CCACHE_MAXSIZE = "40Gi";
   } // (if variant == "allegro" then {
     TMPDIR = "/home/${username}/tmp";
     GSETTINGS_SCHEMA_DIR = "${pkgs.gsettings-desktop-schemas}/share/gsettings-schemas/gsettings-desktop-schemas-47.1/glib-2.0/schemas";