diff --git a/opam b/opam
index bf354b7d8dd0515df18a5885595e19742245cce9..c72a62183d425b32aa528abe3388f7d15940a1c5 100644
--- a/opam
+++ b/opam
@@ -11,5 +11,5 @@ install: [make "install"]
 remove: ["rm" "-rf" "%{lib}%/coq/user-contrib/iris"]
 depends: [
   "coq" { (>= "8.7.0" & < "8.9~") | (= "dev") }
-  "coq-stdpp" { (= "dev.2018-05-14.0.8fdeb77f") | (= "dev") }
+  "coq-stdpp" { (= "dev.2018-05-23.0.a8f65af5") | (= "dev") }
 ]