diff --git a/.travis.yml b/.travis.yml
new file mode 100644
index 0000000..7645ce0
--- /dev/null
+++ b/.travis.yml
@@ -0,0 +1,13 @@
+language: c
+sudo: false
+services:
+  - docker
+install: wget https://raw.githubusercontent.com/ocaml/ocaml-travisci-skeleton/master/.travis-docker.sh
+script: bash ./.travis-docker.sh
+env:
+ global:
+   - PINS="sha:."
+   - PACKAGE="sha"
+ matrix:
+   - DISTRO=alpine OCAML_VERSION=4.02.0
+   - DISTRO=alpine OCAML_VERSION=4.06.0
diff --git a/CHANGES.md b/CHANGES.md
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index 0000000..de4bd81
--- /dev/null
+++ b/CHANGES.md
@@ -0,0 +1,3 @@
+## v1.10
+
+- Fix build with OCaml 4.06 (and `-safe-string`)
diff --git a/sha.opam b/sha.opam
new file mode 100644
index 0000000..410440f
--- /dev/null
+++ b/sha.opam
@@ -0,0 +1,19 @@
+opam-version: "1.2"
+maintainer:   "dave@recoil.org"
+authors:      [
+"Vincent Hanquez" "Thomas Gazagnaire" "Goswin von Brederlow"
+  "Eric Cooper" "Florent Monnier" "Forrest L Norvell"
+  "Vincent Bernadoff" "David Scott"
+]
+homepage:     "https://github.com/djs55/ocaml-sha"
+bug-reports:  "https://github.com/djs55/ocaml-sha/issues"
+dev-repo:     "https://github.com/djs55/ocaml-sha.git"
+license:      "LGPL"
+
+build: make
+install: [make "install"]
+remove: [["ocamlfind" "remove" "sha"]]
+
+depends: ["ocamlfind"]
+
+available: [ ocaml-version >= "4.02.0" ]
\ No newline at end of file