diff --git a/contributors.txt b/contributors.txt
index 3b9c42284a..be27d19da4 100644
--- a/contributors.txt
+++ b/contributors.txt
@@ -266,3 +266,4 @@ YYYY/MM/DD, github id, Full name, email
 2020/09/16, trenki2, Markus Trenkwalder, trenki2[at]gmx[dot]net
 2020/10/08, Marti2203, Martin Mirchev, mirchevmartin2203@gmail.com
 2020/10/20, adamwojs, Adam Wójs, adam[at]wojs.pl
+2020/10/24, cliid, Jiwu Jang, jiwujang@naver.com
\ No newline at end of file
diff --git a/runtime/Python3/src/antlr4/Lexer.py b/runtime/Python3/src/antlr4/Lexer.py
index a60b5bcc93..0a96b70af4 100644
--- a/runtime/Python3/src/antlr4/Lexer.py
+++ b/runtime/Python3/src/antlr4/Lexer.py
@@ -9,8 +9,12 @@
 #  of speed.
 #/
 from io import StringIO
-from typing.io import TextIO
+
 import sys
+if sys.version_info[1] > 5:
+    from typing import TextIO
+else:
+    from typing.io import TextIO
 from antlr4.CommonTokenFactory import CommonTokenFactory
 from antlr4.atn.LexerATNSimulator import LexerATNSimulator
 from antlr4.InputStream import InputStream
diff --git a/runtime/Python3/src/antlr4/Parser.py b/runtime/Python3/src/antlr4/Parser.py
index c461bbdc04..11bf41796c 100644
--- a/runtime/Python3/src/antlr4/Parser.py
+++ b/runtime/Python3/src/antlr4/Parser.py
@@ -3,7 +3,10 @@
 # Use of this file is governed by the BSD 3-clause license that
 # can be found in the LICENSE.txt file in the project root.
 import sys
-from typing.io import TextIO
+if sys.version_info[1] > 5:
+    from typing import TextIO
+else:
+    from typing.io import TextIO
 from antlr4.BufferedTokenStream import TokenStream
 from antlr4.CommonTokenFactory import TokenFactory
 from antlr4.error.ErrorStrategy import DefaultErrorStrategy