diff --git a/algebra/auth.v b/algebra/auth.v
index da3d67f85b237d89bef0c6c9220592c0ceb1f4b1..d2311b0d59ff48cb5be48bfefffadc54bbce00c4 100644
--- a/algebra/auth.v
+++ b/algebra/auth.v
@@ -1,6 +1,6 @@
 From iris.algebra Require Export excl local_updates.
 From iris.base_logic Require Import base_logic.
-From iris.proofmode Require Import class_instances.
+From iris.proofmode Require Import classes.
 
 Record auth (A : Type) := Auth { authoritative : excl' A; auth_own : A }.
 Add Printing Constructor auth.