diff --git a/repo b/repo
index f1eea9b599e2..d3847a9892a8 100644
--- a/repo
+++ b/repo
@@ -1,6 +1,7 @@
 opam-version: "2.0"
 browse: "https://opam.ocaml.org/pkg/"
 upstream: "https://github.com/ocaml/opam-repository/tree/master/"
+archive-mirrors: "https://opam.ocaml.org/cache"
 announce: [
 """
 [WARNING] opam is out-of-date. Please consider updating it (https://opam.ocaml.org/doc/Install.html)