diff --git a/opam b/opam
index b5f67af6aeb749fc0ba913627b478cbbb6faf5a7..fc8a5b8361693fc08e0b697b0bf7663985dffa52 100644
--- a/opam
+++ b/opam
@@ -10,5 +10,5 @@ build: [make "-j%{jobs}%"]
 install: [make "install"]
 remove: [ "sh" "-c" "rm -rf '%{lib}%/coq/user-contrib/lrust'" ]
 depends: [
-  "coq-iris" { (= "dev.2017-09-19.0") | (= "dev") }
+  "coq-iris" { (= "dev.2017-09-20.3") | (= "dev") }
 ]