diff --git a/.travis.yml b/.travis.yml
index d085e07f958..130cb042c5e 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -48,7 +48,7 @@ matrix:
   include:
     - python: 2.7
       env:
-        - VERSIONS="numpy==1.10.0 matplotlib==1.4.0 scipy==0.14.0 pint==0.8"
+        - VERSIONS="numpy==1.10.0 matplotlib==1.4.0 scipy==0.14.0 pint==0.8 xarray==0.9.0"
         - TASK="coverage"
         - TEST_OUTPUT_CONTROL=""
     - python: 3.4
diff --git a/setup.py b/setup.py
index 3c3197e6b36..774b24aa248 100644
--- a/setup.py
+++ b/setup.py
@@ -51,15 +51,15 @@
 
     python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*',
     install_requires=['matplotlib>=1.4', 'numpy>=1.10.0', 'scipy>=0.14',
-                      'pint>=0.8', 'enum34;python_version<"3.4"'],
+                      'pint>=0.8', 'xarray>=0.9.0', 'enum34;python_version<"3.4"'],
     extras_require={
         'cdm': ['pyproj>=1.9.4'],
         'dev': ['ipython[all]>=3.1'],
         'doc': ['sphinx>=1.4', 'sphinx-gallery', 'doc8', 'recommonmark',
-                'netCDF4!=1.4', 'pandas'],
-        'examples': ['cartopy>=0.13.1', 'pandas', 'xarray'],
-        'test': ['pandas', 'pytest>=2.4', 'pytest-runner', 'pytest-mpl', 'pytest-flake8',
-                 'cartopy>=0.13.1', 'xarray', 'flake8>3.2.0', 'flake8-builtins!=1.4.0',
+                'netCDF4!=1.4'],
+        'examples': ['cartopy>=0.13.1'],
+        'test': ['pytest>=2.4', 'pytest-runner', 'pytest-mpl', 'pytest-flake8',
+                 'cartopy>=0.13.1', 'flake8>3.2.0', 'flake8-builtins!=1.4.0',
                  'flake8-comprehensions', 'flake8-copyright',
                  'flake8-docstrings', 'flake8-import-order', 'flake8-mutable',
                  'flake8-pep3101', 'flake8-print', 'flake8-quotes',