diff --git a/.travis.yml b/.travis.yml
index 0787fc2..ba0799b 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 language: cpp
 install:
-  - sudo apt-get install g++ cmake
+  - sudo apt-get install g++ cmake gfortran
   - sudo pip install pytest
 script:
   - py.test -vv test/test.py