diff --git a/coq-lambda-rust.opam b/coq-lambda-rust.opam
index 14f1cd196b3addcc55acd5edc6b28277646e8257..9847b59736cd98165c20eaf1dcf39abc149658ad 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.2024-02-02.1.b30c53e2") | (= "dev") }
+  "coq-iris" { (= "dev.2024-02-06.0.66d2e339") | (= "dev") }
 ]
 
 build: [make "-j%{jobs}%"]