try this.

Author: jacobwilliams

.travis.yml

@@ -3,15 +3,18 @@ language: python
 python:
   - 2.7
 
+virtualenv:
+  system_site_packages: true
+
 before_install:
   - sudo add-apt-repository ppa:ubuntu-toolchain-r/test -y
   - sudo apt-get update -qq
+  - sudo apt-get install -qq python-numpy python-scipy
   - sudo apt-get install gfortran-4.9
   - sudo ln -fs /usr/bin/gfortran-4.9 /usr/bin/gfortran && gfortran --version
   - sudo -H pip install FoBiS.py && FoBiS.py --version
   - sudo -H pip install ford && ford --version
   - sudo -H pip install matplotlib
-  - sudo -H pip install numpy
   - export PATH=".:$PATH"
 
 before_script: