diff --git a/coq-lambda-rust.opam b/coq-lambda-rust.opam
index bd2b84d4c81f7cd317e89b9a269fdc44eda3c8f9..ceaf788601252fa7bb8950df402d18eb15bbdef7 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.2021-09-01.0.55cd1cc9") | (= "dev") }
+  "coq-iris" { (= "dev.2021-09-06.2.95df9887") | (= "dev") }
 ]
 
 build: [make "-j%{jobs}%"]