diff --git a/theories/heap_lang/lib/lock.v b/theories/heap_lang/lib/lock.v
index 422f8d8b51330b4e505f6c281fef1078aa42a8fc..67f1338512d502747c217e785bcb0a3db0cd69ed 100644
--- a/theories/heap_lang/lib/lock.v
+++ b/theories/heap_lang/lib/lock.v
@@ -1,4 +1,4 @@
-From iris.heap_lang Require Export op_rules notation.
+From iris.heap_lang Require Export lifting notation.
 From iris.base_logic.lib Require Export invariants.
 
 Structure lock Σ `{!heapG Σ} := Lock {