diff --git a/opam b/opam
index b1ae361a8a45a5fb4a04cab07fecffe5f3ad476c..bf1ea8241da415ca96906b4f776aa0b68fdf54d6 100644
--- a/opam
+++ b/opam
@@ -11,5 +11,5 @@ install: [make "install"]
 remove: ["rm" "-rf" "%{lib}%/coq/user-contrib/iris"]
 depends: [
   "coq" { (>= "8.7.1" & < "8.10~") | (= "dev") }
-  "coq-stdpp" { (= "dev.2018-11-26.0.be4eb648") | (= "dev") }
+  "coq-stdpp" { (= "dev.2018-12-12.0.9cbafb67") | (= "dev") }
 ]