diff --git a/.travis.yml b/.travis.yml
index e47b5da..4285a35 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -2,10 +2,13 @@ language: python
 matrix:
   include:
     - python: 3.6
+    - python: 3.7
+      dist: xenial
+      sudo: true
 cache: pip
 
 install:
   - pip install tox-travis
 
 script:
-  - tox
\ No newline at end of file
+  - tox
diff --git a/setup.py b/setup.py
index a36260a..aca2b17 100644
--- a/setup.py
+++ b/setup.py
@@ -18,7 +18,7 @@
           author='Jinzhe Zeng',
           author_email='jzzeng@stu.ecnu.edu.cn',
           packages=find_packages(),
-          python_requires='~=3.6.0',
+          python_requires='>=3.6.0',
           install_requires=['numpy', 'scipy',
                             'matplotlib', 'scikit-learn', 'ase>=3.12',
                             'coloredlogs',
@@ -42,6 +42,7 @@
               "Operating System :: POSIX :: Linux",
               "Operating System :: Microsoft :: Windows",
               "Programming Language :: Python :: 3.6",
+              "Programming Language :: Python :: 3.7",
               "Topic :: Scientific/Engineering :: Chemistry",
               "Topic :: Software Development :: Libraries :: Python Modules",
               "Topic :: Software Development :: Version Control :: Git",
diff --git a/tox.ini b/tox.ini
index 678afc9..39c38c5 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,5 +1,5 @@
 [tox]
-envlist = py36
+envlist = py{36,37}
 
 [testenv]
 extras = tf, test
@@ -12,4 +12,4 @@ commands =
     pytest --pyargs kconmd --cov {envsitepackagesdir}/kconmd -s
     - coveralls
     - codecov -e TOXENV
-    - python-codacy-coverage -r coverage.xml
\ No newline at end of file
+    - python-codacy-coverage -r coverage.xml