diff --git a/stdlib/VERSIONS b/stdlib/VERSIONS
index d4c475561..44557650e 100644
--- a/stdlib/VERSIONS
+++ b/stdlib/VERSIONS
@@ -1,6 +1,6 @@
 __future__: 2.7
 __main__: 2.7
-_ast: 3.6
+_ast: 2.7
 _bisect: 2.7
 _bootlocale: 3.6
 _codecs: 2.7
@@ -14,47 +14,47 @@ _dummy_thread: 3.6
 _dummy_threading: 2.7
 _heapq: 2.7
 _imp: 3.6
-_json: 3.6
-_markupbase: 3.6
+_json: 2.7
+_markupbase: 2.7
 _msi: 2.7
 _operator: 3.6
-_osx_support: 3.6
+_osx_support: 2.7
 _posixsubprocess: 3.6
 _py_abc: 3.7
 _pydecimal: 3.6
 _random: 2.7
 _sitebuiltins: 3.6
 _stat: 3.6
-_thread: 3.6
+_thread: 2.7
 _threading_local: 3.6
-_tkinter: 3.6
+_tkinter: 2.7
 _tracemalloc: 3.6
 _typeshed: 2.7
 _warnings: 2.7
 _weakref: 2.7
 _weakrefset: 2.7
 _winapi: 3.6
-abc: 3.6
+abc: 2.7
 aifc: 2.7
 antigravity: 2.7
 argparse: 2.7
 array: 2.7
-ast: 3.6
+ast: 2.7
 asynchat: 2.7
-asyncio: 3.6
+asyncio: 3.4
 asyncore: 2.7
-atexit: 3.6
+atexit: 2.7
 audioop: 2.7
 base64: 2.7
 bdb: 2.7
 binascii: 2.7
 binhex: 2.7
 bisect: 2.7
-builtins: 3.6
+builtins: 3.0
 bz2: 2.7
 cProfile: 2.7
 calendar: 2.7
-cgi: 3.6
+cgi: 2.7
 cgitb: 2.7
 chunk: 2.7
 cmath: 2.7
@@ -62,73 +62,73 @@ cmd: 2.7
 code: 2.7
 codecs: 2.7
 codeop: 2.7
-collections: 3.6
+collections: 2.7
 colorsys: 2.7
-compileall: 3.6
-concurrent: 3.6
-configparser: 3.6
+compileall: 2.7
+concurrent: 3.2
+configparser: 2.7
 contextlib: 2.7
 contextvars: 3.7
 copy: 2.7
-copyreg: 3.6
+copyreg: 2.7
 crypt: 2.7
 csv: 2.7
 ctypes: 2.7
 curses: 2.7
 dataclasses: 3.7
 datetime: 2.7
-dbm: 3.6
+dbm: 2.7
 decimal: 2.7
 difflib: 2.7
 dis: 2.7
-distutils: 3.6
+distutils: 2.7
 doctest: 2.7
 dummy_threading: 2.7
-email: 3.6
-encodings: 3.6
+email: 2.7
+encodings: 2.7
 ensurepip: 2.7
-enum: 3.6
+enum: 3.4
 errno: 2.7
-faulthandler: 3.6
-fcntl: 3.6
+faulthandler: 3.3
+fcntl: 2.7
 filecmp: 2.7
 fileinput: 2.7
-fnmatch: 3.6
+fnmatch: 2.7
 formatter: 2.7
 fractions: 2.7
 ftplib: 2.7
-functools: 3.6
-gc: 3.6
+functools: 2.7
+gc: 2.7
 genericpath: 2.7
-getopt: 3.6
-getpass: 3.6
-gettext: 3.6
-glob: 3.6
+getopt: 2.7
+getpass: 2.7
+gettext: 2.7
+glob: 2.7
 graphlib: 3.9
 grp: 2.7
-gzip: 3.6
-hashlib: 3.6
-heapq: 3.6
+gzip: 2.7
+hashlib: 2.7
+heapq: 2.7
 hmac: 2.7
-html: 3.6
-http: 3.6
+html: 2.7
+http: 3.0
 imaplib: 2.7
 imghdr: 2.7
-imp: 3.6
-importlib: 3.6
-inspect: 3.6
-io: 3.6
-ipaddress: 3.6
-itertools: 3.6
-json: 3.6
+imp: 2.7
+importlib: 2.7
+inspect: 2.7
+io: 2.7
+ipaddress: 2.7
+itertools: 2.7
+json: 2.7
 keyword: 2.7
 lib2to3: 2.7
 linecache: 2.7
 locale: 2.7
-logging: 3.6
-lzma: 3.6
+logging: 2.7
+lzma: 3.3
 macpath: 2.7
-macurl2path: 3.6
+macurl2path: 2.7
 mailbox: 2.7
 mailcap: 2.7
 marshal: 2.7
@@ -138,30 +138,30 @@ mmap: 2.7
 modulefinder: 2.7
 msilib: 2.7
 msvcrt: 2.7
-multiprocessing: 3.6
+multiprocessing: 2.7
 netrc: 2.7
 nis: 2.7
-nntplib: 3.6
-ntpath: 3.6
-nturl2path: 3.6
+nntplib: 2.7
+ntpath: 2.7
+nturl2path: 2.7
 numbers: 2.7
 opcode: 2.7
 operator: 2.7
 optparse: 2.7
-os: 3.6
-ossaudiodev: 3.6
+os: 2.7
+ossaudiodev: 2.7
 parser: 2.7
-pathlib: 3.6
+pathlib: 3.4
 pdb: 2.7
 pickle: 2.7
 pickletools: 2.7
-pipes: 3.6
+pipes: 2.7
 pkgutil: 2.7
-platform: 3.6
+platform: 2.7
 plistlib: 2.7
 poplib: 2.7
-posix: 3.6
-posixpath: 3.6
+posix: 2.7
+posixpath: 2.7
 pprint: 2.7
 profile: 2.7
 pstats: 2.7
@@ -172,86 +172,86 @@ pyclbr: 2.7
 pydoc: 2.7
 pydoc_data: 2.7
 pyexpat: 2.7
-queue: 3.6
+queue: 2.7
 quopri: 2.7
-random: 3.6
-re: 3.6
+random: 2.7
+re: 2.7
 readline: 2.7
-reprlib: 3.6
-resource: 3.6
+reprlib: 2.7
+resource: 2.7
 rlcompleter: 2.7
-runpy: 3.6
+runpy: 2.7
 sched: 2.7
 secrets: 3.6
 select: 2.7
-selectors: 3.6
-shelve: 3.6
-shlex: 3.6
+selectors: 3.4
+shelve: 2.7
+shlex: 2.7
 shutil: 2.7
-signal: 3.6
+signal: 2.7
 site: 2.7
 smtpd: 2.7
-smtplib: 3.6
+smtplib: 2.7
 sndhdr: 2.7
 socket: 2.7
-socketserver: 3.6
-spwd: 3.6
+socketserver: 2.7
+spwd: 2.7
 sqlite3: 2.7
 sre_compile: 2.7
-sre_constants: 3.6
-sre_parse: 3.6
+sre_constants: 2.7
+sre_parse: 2.7
 ssl: 2.7
-stat: 3.6
-statistics: 3.6
-string: 3.6
+stat: 2.7
+statistics: 3.4
+string: 2.7
 stringprep: 2.7
 struct: 2.7
-subprocess: 3.6
+subprocess: 2.7
 sunau: 2.7
-symbol: 3.6
+symbol: 2.7
 symtable: 2.7
-sys: 3.6
+sys: 2.7
 sysconfig: 2.7
 syslog: 2.7
 tabnanny: 2.7
 tarfile: 2.7
 telnetlib: 2.7
-tempfile: 3.6
+tempfile: 2.7
 termios: 2.7
-textwrap: 3.6
+textwrap: 2.7
 this: 2.7
 threading: 2.7
 time: 2.7
 timeit: 2.7
-tkinter: 3.6
+tkinter: 3.0
 token: 2.7
-tokenize: 3.6
+tokenize: 2.7
 trace: 2.7
 traceback: 2.7
-tracemalloc: 3.6
+tracemalloc: 3.4
 tty: 2.7
 turtle: 2.7
-types: 3.6
-typing: 3.6
+types: 2.7
+typing: 3.5
 typing_extensions: 2.7
 unicodedata: 2.7
-unittest: 3.6
-urllib: 3.6
+unittest: 2.7
+urllib: 2.7
 uu: 2.7
 uuid: 2.7
-venv: 3.6
+venv: 3.3
 warnings: 2.7
 wave: 2.7
 weakref: 2.7
 webbrowser: 2.7
-winreg: 3.6
+winreg: 2.7
 winsound: 2.7
 wsgiref: 2.7
 xdrlib: 2.7
 xml: 2.7
-xmlrpc: 3.6
+xmlrpc: 3.0
 xxlimited: 3.6
-zipapp: 3.6
+zipapp: 3.5
 zipfile: 2.7
 zipimport: 2.7
 zlib: 2.7