diff --git a/.travis.yml b/.travis.yml
index 040ec5f..269b5f5 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -13,6 +13,7 @@ before_install:
   - sudo add-apt-repository ppa:staticfloat/${JULIAVERSION} -y
   - sudo apt-get update -qq -y
   - sudo apt-get install libpcre3-dev julia -y
+  - sudo apt-get install gfortran
   - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
 script:
   - julia -e 'Pkg.init(); Pkg.clone(pwd()); Pkg.build("Lbfgsb"); Pkg.test("Lbfgsb")'