diff --git a/example/r-hello/esy.json b/example/r-hello/esy.json
index 60efa4f0..67f0cf91 100644
--- a/example/r-hello/esy.json
+++ b/example/r-hello/esy.json
@@ -3,6 +3,7 @@
     "@opam/dream": "1.0.0~alpha4",
     "@opam/dune": "^2.0",
     "@opam/reason": "^3.7.0",
+    "@opam/conf-libssl": "3",
     "ocaml": "4.12.x"
   },
   "devDependencies": {