diff --git a/.travis.yml b/.travis.yml
index 6553701..3145019 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -5,8 +5,6 @@ python:
   - "3.4"
   - "3.5"
   - "3.6"
-  - "3.7"
-  - nightly
 
 before_install:
   - sudo apt-get -qq update
diff --git a/CHANGELOG.md b/CHANGELOG.md
index fb3cb5f..0547f82 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 0.1.5
+
+- Support triangle wave.
+    - Contributor: @AntiMatterAMA
+
 ## 0.1.4
 
 - Fix channels of Player class from 2 to 1 to play proper sound.
diff --git a/README.md b/README.md
index 0200a00..33df8b6 100644
--- a/README.md
+++ b/README.md
@@ -71,7 +71,7 @@ $ pip install pyaudio
 
 ## Supported OS
 
-- macOS Sierra
+- macOS 10.12 and above
 - Ubuntu 16.04
 
 ## Supported versions
diff --git a/setup.py b/setup.py
index faf5c2e..ee932cb 100644
--- a/setup.py
+++ b/setup.py
@@ -1,12 +1,5 @@
 from setuptools import setup, find_packages
-version = '0.1.4'
-
-try:
-    import pypandoc
-    read_md = lambda f: pypandoc.convert(f, 'rst')
-except ImportError:
-    print("warning: pypandoc module not found, could not convert Markdown to RST")
-    read_md = lambda f: open(f, 'r').read()
+version = '0.1.5'
 
 setup(
     name='synthesizer',
@@ -28,7 +21,8 @@
     packages=find_packages(exclude=['test']),
     include_package_data=True,
     zip_safe=True,
-    long_description=read_md('README.md'),
+    long_description=open('README.md').read(),
+    long_description_content_type='text/markdown',
     test_suite='nose.collector',
     install_requires=[
         'enum34>=1.1.6',