--- a/pycparser/c_lexer.py
+++ b/pycparser/c_lexer.py
@@ -8,8 +8,8 @@
 #------------------------------------------------------------------------------
 import re
 
-from .ply import lex
-from .ply.lex import TOKEN
+from ply import lex
+from ply.lex import TOKEN
 
 
 class CLexer(object):
--- a/pycparser/c_parser.py
+++ b/pycparser/c_parser.py
@@ -6,7 +6,7 @@
 # Eli Bendersky [https://eli.thegreenplace.net/]
 # License: BSD
 #------------------------------------------------------------------------------
-from .ply import yacc
+from ply import yacc
 
 from . import c_ast
 from .c_lexer import CLexer
--- a/setup.py
+++ b/setup.py
@@ -64,7 +64,7 @@ setup(
         'Programming Language :: Python :: 3.10',
     ],
     python_requires=">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*",
-    packages=['pycparser', 'pycparser.ply'],
+    packages=['pycparser'],
     package_data={'pycparser': ['*.cfg']},
     cmdclass={'install': install, 'sdist': sdist},
 )