Only python 3.6+ is supported.

README.md

@@ -14,8 +14,8 @@ This library has been updated to be compatible with MuJoCo version 2.0 released
 
 The following platforms are currently supported:
 
-- Linux with Python 3.6. See [the `Dockerfile`](Dockerfile) for the canonical list of system dependencies.
-- OS X with Python 3.6.
+- Linux with Python 3.6+. See [the `Dockerfile`](Dockerfile) for the canonical list of system dependencies.
+- OS X with Python 3.6+.
 
 The following platforms are DEPRECATED and unsupported:
 

setup.py

@@ -43,10 +43,9 @@ setup(
     package_data={'mujoco_py': ['generated/*.so']},
     install_requires=read_requirements_file('requirements.txt'),
     tests_require=read_requirements_file('requirements.dev.txt'),
-    python_requires='>=3.5',
+    python_requires='>=3.6',
     classifiers=[
         'Programming Language :: Python :: 3',
-        'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Programming Language :: Python :: 3.7',
         'Programming Language :: Python :: 3 :: Only',