diff --git a/.travis.yml b/.travis.yml
index 0d4f965e..a4800905 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,9 +8,9 @@ env:
   - PINS="containers:."
   - DISTRO="ubuntu-16.04"
   matrix:
-  - PACKAGE="containers" OCAML_VERSION="4.02.3" DEPOPTS="base-threads base-unix"
-  - PACKAGE="containers" OCAML_VERSION="4.03.0" DEPOPTS="base-threads base-unix"
-  - PACKAGE="containers" OCAML_VERSION="4.04.2" DEPOPTS="base-threads base-unix"
-  - PACKAGE="containers" OCAML_VERSION="4.05.0" DEPOPTS="base-threads base-unix"
-  - PACKAGE="containers" OCAML_VERSION="4.06.0" DEPOPTS="base-threads base-unix"
-  - PACKAGE="containers" OCAML_VERSION="4.07.0" DEPOPTS="base-threads base-unix"
+  - PACKAGE="containers" OCAML_VERSION="4.02.3" EXTRA_DEPS="base-threads base-unix"
+  - PACKAGE="containers" OCAML_VERSION="4.03.0" EXTRA_DEPS="base-threads base-unix"
+  - PACKAGE="containers" OCAML_VERSION="4.04.2" EXTRA_DEPS="base-threads base-unix"
+  - PACKAGE="containers" OCAML_VERSION="4.05.0" EXTRA_DEPS="base-threads base-unix"
+  - PACKAGE="containers" OCAML_VERSION="4.06.0" EXTRA_DEPS="base-threads base-unix"
+  - PACKAGE="containers" OCAML_VERSION="4.07.0" EXTRA_DEPS="base-threads base-unix"