diff --git a/README.md b/README.md
index 48f854ef7..a14baf4c2 100644
--- a/README.md
+++ b/README.md
@@ -71,7 +71,7 @@ and [RoBERTa](https://pytorch.org/hub/pytorch_fairseq_roberta/) for more example
 # Requirements and Installation
 
 * [PyTorch](http://pytorch.org/) version >= 1.2.0
-* Python version >= 3.5
+* Python version >= 3.6
 * For training new models, you'll also need an NVIDIA GPU and [NCCL](https://github.com/NVIDIA/nccl)
 * **For faster training** install NVIDIA's [apex](https://github.com/NVIDIA/apex) library with the `--cuda_ext` option
 
diff --git a/setup.py b/setup.py
index 98a7bdf00..e31f81246 100644
--- a/setup.py
+++ b/setup.py
@@ -9,8 +9,8 @@ from setuptools import setup, find_packages, Extension
 import sys
 
 
-if sys.version_info < (3, 5):
-    sys.exit('Sorry, Python >=3.5 is required for fairseq.')
+if sys.version_info < (3, 6):
+    sys.exit('Sorry, Python >= 3.6 is required for fairseq.')
 
 
 with open('README.md') as f:
@@ -122,7 +122,6 @@ setup(
     classifiers=[
         'Intended Audience :: Science/Research',
         'License :: OSI Approved :: MIT License',
-        'Programming Language :: Python :: 3.5',
         'Programming Language :: Python :: 3.6',
         'Topic :: Scientific/Engineering :: Artificial Intelligence',
     ],