diff --git a/.travis.yml b/.travis.yml
index 6dfaa57..715ac80 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -8,23 +8,13 @@ python:
     - 3.4
     - 3.5
     - 3.6
+    - 3.7
 
 env:
     - TOXENV=test
 
 matrix:
     include:
-        - # The OS X VM doesn't have any Python support at all
-          # See https://github.com/travis-ci/travis-ci/issues/2312
-          os: osx
-          language: generic
-          env: TOXENV=test
-          before_install:
-            - brew update
-            - brew upgrade python
-            - python3 -m pip install --user virtualenv
-            - /Users/travis/Library/Python/3.7/bin/virtualenv $HOME/osx-py
-            - source $HOME/osx-py/bin/activate
         - python: 2.7
           env: TOXENV=stylecheck
         - python: 3.6
diff --git a/atomicwrites/__init__.py b/atomicwrites/__init__.py
index cfa5c29..623826e 100644
--- a/atomicwrites/__init__.py
+++ b/atomicwrites/__init__.py
@@ -9,7 +9,13 @@
 except ImportError:
     fcntl = None
 
-__version__ = '1.3.0'
+# `fspath` was added in Python 3.6
+try:
+    from os import fspath
+except ImportError:
+    fspath = None
+
+__version__ = '1.4.0'
 
 
 PY2 = sys.version_info[0] == 2
@@ -137,6 +143,10 @@ def __init__(self, path, mode=DEFAULT_MODE, overwrite=False,
         if 'w' not in mode:
             raise ValueError('AtomicWriters can only be written to.')
 
+        # Attempt to convert `path` to `str` or `bytes`
+        if fspath is not None:
+            path = fspath(path)
+
         self._path = path
         self._mode = mode
         self._overwrite = overwrite
@@ -165,8 +175,8 @@ def _open(self, get_fileobject):
                 except Exception:
                     pass
 
-    def get_fileobject(self, suffix="", prefix=tempfile.template, dir=None,
-                       **kwargs):
+    def get_fileobject(self, suffix="", prefix=tempfile.gettempprefix(),
+                       dir=None, **kwargs):
         '''Return the temporary file to use.'''
         if dir is None:
             dir = os.path.normpath(os.path.dirname(self._path))
diff --git a/setup.py b/setup.py
index e0eaca0..adbf232 100644
--- a/setup.py
+++ b/setup.py
@@ -32,6 +32,7 @@
         'Programming Language :: Python :: 3.4',
         'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
+        'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: Implementation :: CPython',
     ],
     python_requires='>=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*',