diff --git a/coq-lambda-rust.opam b/coq-lambda-rust.opam
index 8ee195b1e5956f83dcdfe00df74bef3a04ef6b37..5d05e47a15d2f2924f32756cad82c8753407af73 100644
--- a/coq-lambda-rust.opam
+++ b/coq-lambda-rust.opam
@@ -13,7 +13,7 @@ the type system, and safety proof for some Rust libraries.
 """
 
 depends: [
-  "coq-iris" { (= "dev.2021-06-03.0.2959900d") | (= "dev") }
+  "coq-iris" { (= "dev.2021-06-09.0.07ab4060") | (= "dev") }
 ]
 
 build: [make "-j%{jobs}%"]