diff --git a/.travis.yml b/.travis.yml
index a95a682..913f394 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,7 @@
 language: julia
+os:
+  - linux
+  - osx
 julia:
   - 0.7
   - 1.0
@@ -10,9 +13,9 @@ matrix:
 notifications:
   email: false
 # uncomment the following lines to override the default test script
-#script:
+script:
  - if [[ -a .git/shallow ]]; then git fetch --unshallow; fi
- - julia --check-bounds=yes -e 'Pkg.clone(pwd()); Pkg.develop("RandomQuantum"); Pkg.develop("QuantumInfo"); Pkg.build("QuantumTomography"); Pkg.test("QuantumTomography"; coverage=true)'
+ - julia --check-bounds=yes -e 'using Pkg; Pkg.add(PackageSpec(url=pwd())); Pkg.develop("RandomQuantum"); Pkg.develop("QuantumInfo"); Pkg.build("QuantumTomography"); Pkg.test("QuantumTomography"; coverage=true)'
 
 # necessary to run on new container-based infrastructure
 sudo: false