diff --git a/repos/rust-lang/reference.toml b/repos/rust-lang/reference.toml
index 5ef30917d..e1e10e3af 100644
--- a/repos/rust-lang/reference.toml
+++ b/repos/rust-lang/reference.toml
@@ -13,3 +13,5 @@ spec-contributors = "write"
 [[branch-protections]]
 pattern = "master"
 ci-checks = ["Success gate"]
+
+[environments.github-pages]