diff --git a/coq-lambda-rust.opam b/coq-lambda-rust.opam
index aa17920f241d979c0685890db2f4dddc7954bc9d..c0282b6d101c8bc3810daecb9bb8566c6096ce27 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.2021-03-06.3.b0708b01") | (= "dev") }
+  "coq-iris" { (= "dev.2021-03-09.0.7cfeca1f") | (= "dev") }
 ]
 
 build: [make "-j%{jobs}%"]