diff --git a/.travis.yml b/.travis.yml
index db29efd1..6399cbf2 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -9,13 +9,13 @@ python:
   - "3.6"
 
 env:
-  - MPI="mpich-3.0.4"    CHAINER_VER="3.2.0"
+  - MPI="mpich-3.0.4"    CHAINER_VER="4.0.0b3"
   - MPI="mpich-3.0.4"    CHAINER_VER="3.3.0"
-  - MPI="mpich-3.2"      CHAINER_VER="3.2.0"
+  - MPI="mpich-3.2"      CHAINER_VER="4.0.0b3"
   - MPI="mpich-3.2"      CHAINER_VER="3.3.0"
-  - MPI="openmpi-1.6.5"  CHAINER_VER="3.2.0"
+  - MPI="openmpi-1.6.5"  CHAINER_VER="4.0.0b3"
   - MPI="openmpi-1.6.5"  CHAINER_VER="3.3.0"
-  - MPI="openmpi-1.10.3" CHAINER_VER="3.2.0"
+  - MPI="openmpi-1.10.3" CHAINER_VER="4.0.0b3"
   - MPI="openmpi-1.10.3" CHAINER_VER="3.3.0"
 
 cache: