diff --git a/homu/files/cfg.toml b/homu/files/cfg.toml
index a48e4128..1a828b1f 100644
--- a/homu/files/cfg.toml
+++ b/homu/files/cfg.toml
@@ -39,6 +39,7 @@ secret = "{{ pillar["homu"]["web-secret"] }}"
     ('servo', 'libfontconfig'),
     ('servo', 'libfreetype2'),
     ('servo', 'mozjs'),
+    ('servo', 'osmesa-src'),
     ('servo', 'rust-azure'),
     ('servo', 'rust-bindgen'),
     ('servo', 'rust-cssparser'),