diff --git a/containers-data.opam b/containers-data.opam
index 815665fd..d2d64cff 100644
--- a/containers-data.opam
+++ b/containers-data.opam
@@ -14,8 +14,8 @@ depends: [
   "dune" { >= "2.0" }
   "containers" { = version }
   "seq"
-  (("ocaml" {with-test & < "4.08"} & "qcheck-core" {>= "0.20" & with-test})
-  | ("ocaml" {with-test & >= "4.08"} & "qcheck-core" {>= "0.18" & with-test}))
+  (("ocaml" {with-test & < "4.08"} & "qcheck-core" {>= "0.17" & with-test})
+  | ("ocaml" {with-test & >= "4.08"} & "qcheck-core" {>= "0.20" & with-test}))
   "iter" { with-test }
   "gen" { with-test }
   "mdx" { with-test }