diff --git a/.travis.yml b/.travis.yml
index be2ca9470a..5de8b2983a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,4 +7,8 @@ sudo: true
 env:
   matrix:
   - PACKAGE="emile" OCAML_VERSION=4.06 TESTS=true
+  - PACKAGE="emile" OCAML_VERSION=4.07 TESTS=true
+  - PACKAGE="emile" OCAML_VERSION=4.08 TESTS=true
+  - PINS="mrmime:https://github.com/mirage/mrmime.git" PACKAGE="emile" OCAML_VERSION=4.06 TESTS=true
   - PINS="mrmime:https://github.com/mirage/mrmime.git" PACKAGE="emile" OCAML_VERSION=4.07 TESTS=true
+  - PINS="mrmime:https://github.com/mirage/mrmime.git" PACKAGE="emile" OCAML_VERSION=4.08 TESTS=true