diff --git a/.travis.yml b/.travis.yml
index 8dd5672..a1b719a 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,6 +1,6 @@
 # Based on http://conda.pydata.org/docs/travis.html
-language: python
-sudo: false # use container based build
+language: minimal
+sudo: false  # use container based build
 notifications:
   email: false
 branches:
@@ -10,14 +10,43 @@ branches:
 matrix:
   fast_finish: true
   include:
-  - python: 2.7
-    env: CONDA_ENV=py27
-  - python: 3.6
-    env: CONDA_ENV=py36
+  - addons:
+      apt:
+        packages:
+          - gfortran
+    env:
+      - CONDA_ENV='py27'
+  - addons:
+      apt:
+        packages:
+          - gfortran
+    env:
+      - CONDA_ENV='py36'
+  - addons:
+      apt:
+        packages:
+          - gfortran
+    env:
+      - CONDA_ENV='py37'
+  - compiler: gcc
+    addons: &gcc7
+      apt:
+        sources:
+          - ubuntu-toolchain-r-test
+        packages:
+          - cmake3
+          - g++-7
+          - gcc-7
+          - gfortran-7
+          - swig
+    env:
+      - CONDA_ENV='py37'
 
 before_install:
   - if [[ "$TRAVIS_PYTHON_VERSION" == "2.7" ]]; then
       wget http://repo.continuum.io/miniconda/Miniconda-3.16.0-Linux-x86_64.sh -O miniconda.sh;
+    elif [[ "$TRAVIS_PYTHON_VERSION" == "3.7" ]]; then
+      wget http://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh -O miniconda.sh;
     else
       wget http://repo.continuum.io/miniconda/Miniconda3-3.16.0-Linux-x86_64.sh -O miniconda.sh;
     fi
@@ -28,11 +57,6 @@ before_install:
   - conda update -q conda
   - conda info -a
 
-addons:
-  apt:
-    packages:
-    - gfortran
-
 install:
   - conda env create -n test_env --file ci/requirements-$CONDA_ENV.yml
   - source activate test_env
diff --git a/ci/requirements-py37.yml b/ci/requirements-py37.yml
new file mode 100644
index 0000000..f2cae4c
--- /dev/null
+++ b/ci/requirements-py37.yml
@@ -0,0 +1,5 @@
+name: test_env
+dependencies:
+  - python=3.7
+  - pytest
+  - numpy
diff --git a/py3nj/_version.py b/py3nj/_version.py
index b794fd4..df9144c 100644
--- a/py3nj/_version.py
+++ b/py3nj/_version.py
@@ -1 +1 @@
-__version__ = '0.1.0'
+__version__ = '0.1.1'
diff --git a/setup.py b/setup.py
index 672b42d..a4d129a 100644
--- a/setup.py
+++ b/setup.py
@@ -20,7 +20,7 @@
                          'fortran/xermsg.f', 'fortran/d1mach.f',
                          'fortran/drc3jj.f',
                          'fortran/drc6j.f'],
-                extra_compile_args=['-fopenmp'])
+                extra_compile_args=['-fopenmp', '-nostartfiles'])
 
 # module
 setup(name='py3nj',
@@ -41,5 +41,6 @@
                    'Operating System :: Microsoft :: Windows',
                    'Operating System :: POSIX :: Linux',
                    'Programming Language :: Python :: 3.6',
+                   'Programming Language :: Python :: 3.7',
                    'Topic :: Scientific/Engineering :: Physics']
       )