diff --git a/.travis.yml b/.travis.yml
index a1cf7b55..8c660b67 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,10 +8,12 @@ python:
   - "pypy3"
 
 env:
-  - INFLUXDB_VER=1.2.4
-  - INFLUXDB_VER=1.3.9
-  - INFLUXDB_VER=1.4.2
-  - INFLUXDB_VER=1.5.4
+  - INFLUXDB_VER=1.2.4  # 2017-05-08
+  - INFLUXDB_VER=1.3.9  # 2018-01-19
+  - INFLUXDB_VER=1.4.3  # 2018-01-30
+  - INFLUXDB_VER=1.5.4  # 2018-06-22
+  - INFLUXDB_VER=1.6.4  # 2018-10-24
+  - INFLUXDB_VER=1.7.4  # 2019-02-14
 
 addons:
   apt:
@@ -20,7 +22,31 @@ addons:
 
 matrix:
   include:
-    - python: 2.7
+    - python: 3.7
+      dist: xenial
+      sudo: true
+      env: INFLUXDB_VER=1.2.4
+    - python: 3.7
+      dist: xenial
+      sudo: true
+      env: INFLUXDB_VER=1.3.9
+    - python: 3.7
+      dist: xenial
+      sudo: true
+      env: INFLUXDB_VER=1.4.3
+    - python: 3.7
+      dist: xenial
+      sudo: true
+      env: INFLUXDB_VER=1.5.4
+    - python: 3.7
+      dist: xenial
+      sudo: true
+      env: INFLUXDB_VER=1.6.4
+    - python: 3.7
+      dist: xenial
+      sudo: true
+      env: INFLUXDB_VER=1.7.4
+    - python: 3.6
       env: TOX_ENV=pep257
     - python: 3.6
       env: TOX_ENV=docs
diff --git a/influxdb/tests/dataframe_client_test.py b/influxdb/tests/dataframe_client_test.py
index ad910a6d..1de3a501 100644
--- a/influxdb/tests/dataframe_client_test.py
+++ b/influxdb/tests/dataframe_client_test.py
@@ -22,6 +22,7 @@
     import pandas as pd
     from pandas.util.testing import assert_frame_equal
     from influxdb import DataFrameClient
+    import numpy
 
 
 @skip_if_pypy
@@ -396,10 +397,16 @@ def test_write_points_from_dataframe_with_numeric_precision(self):
                                        ["2", 2, 2.2222222222222]],
                                  index=[now, now + timedelta(hours=1)])
 
-        expected_default_precision = (
-            b'foo,hello=there 0=\"1\",1=1i,2=1.11111111111 0\n'
-            b'foo,hello=there 0=\"2\",1=2i,2=2.22222222222 3600000000000\n'
-        )
+        if tuple(map(int, numpy.version.version.split('.'))) <= (1, 13, 3):
+            expected_default_precision = (
+                b'foo,hello=there 0=\"1\",1=1i,2=1.11111111111 0\n'
+                b'foo,hello=there 0=\"2\",1=2i,2=2.22222222222 3600000000000\n'
+            )
+        else:
+            expected_default_precision = (
+                b'foo,hello=there 0=\"1\",1=1i,2=1.1111111111111 0\n'
+                b'foo,hello=there 0=\"2\",1=2i,2=2.2222222222222 3600000000000\n'  # noqa E501 line too long
+            )
 
         expected_specified_precision = (
             b'foo,hello=there 0=\"1\",1=1i,2=1.1111 0\n'
@@ -419,6 +426,9 @@ def test_write_points_from_dataframe_with_numeric_precision(self):
             cli = DataFrameClient(database='db')
             cli.write_points(dataframe, "foo", {"hello": "there"})
 
+            print(expected_default_precision)
+            print(m.last_request.body)
+
             self.assertEqual(m.last_request.body, expected_default_precision)
 
             cli = DataFrameClient(database='db')
diff --git a/tox.ini b/tox.ini
index 2f9c212c..4a1921e2 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,21 +1,28 @@
 [tox]
-envlist = py27, py35, py36, pypy, pypy3, flake8, pep257, coverage, docs
+envlist = py27, py35, py36, py37, pypy, pypy3, flake8, pep257, coverage, docs
 
 [testenv]
 passenv = INFLUXDB_PYTHON_INFLUXD_PATH
 setenv = INFLUXDB_PYTHON_SKIP_SERVER_TESTS=False
 deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
-       py27,py34,py35,py36: pandas==0.20.1
-       py27,py34,py35,py36: numpy==1.13.3
+       py27: pandas==0.21.1
+       py27: numpy==1.13.3
+       py35: pandas==0.22.0
+       py35: numpy==1.14.6
+       py36: pandas==0.23.4
+       py36: numpy==1.15.4
+       py37: pandas==0.24.2
+       py37: numpy==1.16.2
 # Only install pandas with non-pypy interpreters
+# Testing all combinations would be too expensive
 commands = nosetests -v --with-doctest {posargs}
 
 [testenv:flake8]
 deps =
   flake8
   pep8-naming
-commands = flake8 --ignore=W503,W504,W605,N802,F821 influxdb
+commands = flake8 influxdb
 
 [testenv:pep257]
 deps = pydocstyle
@@ -26,19 +33,22 @@ deps = -r{toxinidir}/requirements.txt
        -r{toxinidir}/test-requirements.txt
        pandas
        coverage
-       numpy==1.13.3
+       numpy
 commands = nosetests -v --with-coverage --cover-html --cover-package=influxdb
 
 [testenv:docs]
 deps = -r{toxinidir}/requirements.txt
-       pandas==0.20.1
-       numpy==1.13.3
-       Sphinx==1.5.5
+       pandas==0.24.2
+       numpy==1.16.2
+       Sphinx==1.8.5
        sphinx_rtd_theme
 commands = sphinx-build -b html docs/source docs/build
 
 [flake8]
-ignore = N802,F821,E402
-# E402: module level import not at top of file
+ignore = W503,W504,W605,N802,F821,E402
+# W503: Line break occurred before a binary operator
+# W504: Line break occurred after a binary operator
+# W605: invalid escape sequence
 # N802: nosetests's setUp function
 # F821: False positive in intluxdb/dataframe_client.py
+# E402: module level import not at top of file