limiting pytest version for astropy 1.3
@@ -86,7 +86,7 @@ matrix:
- os: linux
env: PYTHON_VERSION=3.5 NUMPY_VERSION=1.11
- os: linux
- env: NUMPY_VERSION=1.12 ASTROPY_VERSION=1.3
+ env: NUMPY_VERSION=1.12 ASTROPY_VERSION=1.3 PYTEST_VERSION='<3.2'
# Now try Astropy dev and LTS vesions with the latest Python.
# The dev version only need to be tested on PRs as there are pull
