diff --git a/iris/prelude/options.v b/iris/prelude/options.v
index 22d74e4a485069bc1cc8ce71dcf386d6e840b23a..cd6d5b0f3e04d341c94030c94e7fc240882a2122 100644
--- a/iris/prelude/options.v
+++ b/iris/prelude/options.v
@@ -10,6 +10,10 @@ Export Set Suggest Proof Using. (* also warns about forgotten [Proof.] *)
 that bullets and curly braces must be used to structure the proof. *)
 Export Set Default Goal Selector "!".
 
+(* We always annotate hints with locality ([Global] or [Local]). This enforces
+that at least global hints are annotated. *)
+Export Set Warnings "+deprecated-hint-without-locality".
+
 (* "Fake" import to whitelist this file for the check that ensures we import
 this file everywhere.
 From iris.prelude Require Import options.