diff --git a/.travis.yml b/.travis.yml
index 84ceb1b1..042bef82 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -3,8 +3,8 @@ python:
   - "2.7"
 env:
   - NUMPY_VERSION=""  WITH_COVERAGE=1 # environment to test with the latest version of NumPy
-  - NUMPY_VERSION="=1.8"
-  - NUMPY_VERSION="=1.7"
+  - NUMPY_VERSION="<1.10"
+  - NUMPY_VERSION="<1.11"
 before_install:
   - wget https://repo.continuum.io/miniconda/Miniconda2-latest-Linux-x86_64.sh -O miniconda.sh
   - chmod +x miniconda.sh