diff --git a/coq-lambda-rust.opam b/coq-lambda-rust.opam
index 9df7c6cfb77b751769d6ade8b300ef7bc2d05789..a6400c25c0ea4d3fee5c747a315d70f757619ba0 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.2021-02-16.0.8ee71fff") | (= "dev") }
+  "coq-iris" { (= "dev.2021-03-03.1.5b0fd25d") | (= "dev") }
 ]
 
 build: [make "-j%{jobs}%"]