diff --git a/opam b/opam
index 5d8b8295ee5c19ab7409bde9f5b8f2578bfc3e6e..135c8a3725b9b53f4761220912cfd23181610d07 100644
--- a/opam
+++ b/opam
@@ -9,5 +9,5 @@ build: [make "-j%{jobs}%"]
 install: [make "install"]
 remove: [ "sh" "-c" "rm -rf '%{lib}%/coq/user-contrib/actris" ]
 depends: [
-  "coq-iris-heap-lang" { (= "dev.2021-10-01.0.b9315f85") | (= "dev") }
+  "coq-iris-heap-lang" { (= "dev.2021-12-08.1.8699ad5a") | (= "dev") }
 ]