diff --git a/README.md b/README.md
index 31f6bae3..6c7b5311 100644
--- a/README.md
+++ b/README.md
@@ -9,7 +9,7 @@ parser similar to the standard `ast` library.  Unlike `ast`, the parsers in
 comments and are independent of the version of Python under which they are run.
 The `typed_ast` parsers produce the standard Python AST (plus type comments),
 and are both fast and correct, as they are based on the CPython 2.7 and 3.7
-parsers.  `typed_ast` runs on CPython 3.5-3.8 on Linux, OS X and Windows.
+parsers.  `typed_ast` runs on CPython 3.6-3.10 on Linux, OS X and Windows.
 
 ## Development Philosophy
 
diff --git a/setup.py b/setup.py
index 0739848e..75114403 100644
--- a/setup.py
+++ b/setup.py
@@ -110,7 +110,6 @@
            'Intended Audience :: Developers',
            'Operating System :: POSIX',
            'Operating System :: Microsoft',
-           'Programming Language :: Python :: 3.5',
            'Programming Language :: Python :: 3.6',
            'Programming Language :: Python :: 3.7',
            'Programming Language :: Python :: 3.8',
@@ -118,6 +117,7 @@
            'Programming Language :: Python :: 3.10',
            'Topic :: Software Development',
        ],
+       python_requires=">=3.6",
        packages = ['typed_ast', 'typed_ast.tests'],
        package_dir={ 'typed_ast.tests': 'ast3/tests' },
        ext_package='typed_ast',
diff --git a/typed_ast/__init__.py b/typed_ast/__init__.py
index c0f285b0..b93562a7 100644
--- a/typed_ast/__init__.py
+++ b/typed_ast/__init__.py
@@ -1 +1 @@
-__version__ = "1.4.4"
+__version__ = "1.5.0.dev0"