diff --git a/.travis.yml b/.travis.yml
index 67b1d913..48672177 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -30,6 +30,16 @@ matrix:
       apt:
         packages:
         - aspcud
+  - os: linux
+    env: OCAML_VERSION=4.06 OCAML_RELEASE=0 WITH_OPAM=0
+    stage: Build
+  - os: linux
+    env: OCAML_VERSION=4.06 OCAML_RELEASE=0 WITH_OPAM=1
+    stage: Test
+    addons:
+      apt:
+        packages:
+        - aspcud
   - os: osx
     env: OCAML_VERSION=4.02 OCAML_RELEASE=3 WITH_OPAM=0
     stage: Build_macOS
@@ -45,3 +55,6 @@ matrix:
   - os: osx
     env: OCAML_VERSION=4.05 OCAML_RELEASE=0 WITH_OPAM=1
     stage: Test_macOS
+  - os: osx
+    env: OCAML_VERSION=4.06 OCAML_RELEASE=0 WITH_OPAM=1
+    stage: Test_macOS