diff --git a/.travis.yml b/.travis.yml
index a9b41d8..9840f30 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,6 +8,6 @@ env:
   global:
   - PACKAGE="mirage-block-xen"
   matrix:
-  - DISTRO="alpine" OCAML_VERSION="4.06"
-  - DISTRO="alpine" OCAML_VERSION="4.07"
-  - DISTRO="ubuntu" OCAML_VERSION="4.08"
+  - DISTRO="ubuntu" OCAML_VERSION="4.10"
+  - DISTRO="alpine" OCAML_VERSION="4.09"
+  - DISTRO="alpine" OCAML_VERSION="4.08"
diff --git a/mirage-block-xen.opam b/mirage-block-xen.opam
index bd8d612..80eb376 100644
--- a/mirage-block-xen.opam
+++ b/mirage-block-xen.opam
@@ -7,7 +7,7 @@ homepage: "https://github.com/mirage/mirage-block-xen"
 doc: "https://mirage.github.io/mirage-block-xen/"
 bug-reports: "https://github.com/mirage/mirage-block-xen/issues"
 depends: [
-  "ocaml" {>= "4.06.0"}
+  "ocaml" {>= "4.08.0"}
   "dune"
   "cmdliner"
   "logs"