diff --git a/.gitignore b/.gitignore
index 5a7db9d..3b31a6b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -2,3 +2,4 @@
 /release_v2.10.tar.gz
 /release_v2.14.tar.gz
 /release_v2.19.tar.gz
+/release_v2.20.tar.gz
diff --git a/pycparser-2.10-ply.patch b/pycparser-2.10-ply.patch
deleted file mode 100644
index d1e1f53..0000000
--- a/pycparser-2.10-ply.patch
+++ /dev/null
@@ -1,38 +0,0 @@
-diff -up pycparser-release_v2.10/pycparser/c_lexer.py.ply pycparser-release_v2.10/pycparser/c_lexer.py
---- pycparser-release_v2.10/pycparser/c_lexer.py.ply	2013-08-03 07:15:32.000000000 -0600
-+++ pycparser-release_v2.10/pycparser/c_lexer.py	2014-08-20 12:40:48.308461164 -0600
-@@ -9,8 +9,8 @@
- import re
- import sys
- 
--from .ply import lex
--from .ply.lex import TOKEN
-+from ply import lex
-+from ply.lex import TOKEN
- 
- 
- class CLexer(object):
-diff -up pycparser-release_v2.10/pycparser/c_parser.py.ply pycparser-release_v2.10/pycparser/c_parser.py
---- pycparser-release_v2.10/pycparser/c_parser.py.ply	2013-08-03 07:15:32.000000000 -0600
-+++ pycparser-release_v2.10/pycparser/c_parser.py	2014-08-20 12:40:05.154894980 -0600
-@@ -8,7 +8,7 @@
- #------------------------------------------------------------------------------
- import re
- 
--from .ply import yacc
-+from ply import yacc
- 
- from . import c_ast
- from .c_lexer import CLexer
-diff -up pycparser-release_v2.10/setup.py.ply pycparser-release_v2.10/setup.py
---- pycparser-release_v2.10/setup.py.ply	2013-08-03 07:15:32.000000000 -0600
-+++ pycparser-release_v2.10/setup.py	2014-08-20 12:40:05.154894980 -0600
-@@ -22,7 +22,7 @@ setup(
-     classifiers = [
-         'Programming Language :: Python :: 2',
-         'Programming Language :: Python :: 3',],
--    packages=['pycparser', 'pycparser.ply'],
-+    packages=['pycparser'],
-     package_data={'pycparser': ['*.cfg']},
- )
- 
diff --git a/pycparser-unbundle-ply.patch b/pycparser-unbundle-ply.patch
new file mode 100644
index 0000000..0f0cd6b
--- /dev/null
+++ b/pycparser-unbundle-ply.patch
@@ -0,0 +1,51 @@
+diff --git a/pycparser/c_lexer.py b/pycparser/c_lexer.py
+index 045d24e..9b3cbf2 100644
+--- a/pycparser/c_lexer.py
++++ b/pycparser/c_lexer.py
+@@ -9,8 +9,8 @@
+ import re
+ import sys
+ 
+-from .ply import lex
+-from .ply.lex import TOKEN
++from ply import lex
++from ply.lex import TOKEN
+ 
+ 
+ class CLexer(object):
+diff --git a/pycparser/c_parser.py b/pycparser/c_parser.py
+index 744ede8..50156a3 100644
+--- a/pycparser/c_parser.py
++++ b/pycparser/c_parser.py
+@@ -8,7 +8,7 @@
+ #------------------------------------------------------------------------------
+ import re
+ 
+-from .ply import yacc
++from ply import yacc
+ 
+ from . import c_ast
+ from .c_lexer import CLexer
+diff --git a/setup.py b/setup.py
+index 6dce89c..b3dbfb4 100644
+--- a/setup.py
++++ b/setup.py
+@@ -8,6 +8,8 @@ except ImportError:
+     from distutils.command.install import install as _install
+     from distutils.command.sdist import sdist as _sdist
+ 
++import ply
++
+ 
+ def _run_build_tables(dir):
+     from subprocess import check_call
+@@ -60,7 +62,8 @@ setup(
+         'Programming Language :: Python :: 3.6',
+     ],
+     python_requires=">=2.7, !=3.0.*, !=3.1.*, !=3.2.*, !=3.3.*",
+-    packages=['pycparser', 'pycparser.ply'],
++    packages=['pycparser'],
++    install_requires=['ply==' + ply.__version__],
+     package_data={'pycparser': ['*.cfg']},
+     cmdclass={'install': install, 'sdist': sdist},
+ )
diff --git a/python-pycparser.spec b/python-pycparser.spec
index 7431836..32c315d 100644
--- a/python-pycparser.spec
+++ b/python-pycparser.spec
@@ -1,27 +1,25 @@
-# Ensure that pycparser uses the same YACC __tabversion__ as python-ply
-# package to prevent "yacc table file version is out of date" problem.
-%define ply_version %(LC_ALL=C rpm -q --qf '%%{VERSION}' python3-ply | grep -Eo '^[^.]+\.[^.]+')
-
 %bcond_without tests
 
 Name:           python-pycparser
 Summary:        C parser and AST generator written in Python
-Version:        2.19
-Release:        3%{?dist}
+Version:        2.20
+Release:        1%{?dist}
 License:        BSD
 URL:            http://github.com/eliben/pycparser
-Source0:        http://github.com/eliben/pycparser/archive/release_v%{version}.tar.gz
+Source0:        %{url}/archive/release_v%{version}.tar.gz
 Source1:        pycparser-0.91.1-remove-relative-sys-path.py
 
-Patch100:       pycparser-2.10-ply.patch
 # This is Fedora-specific; I don't think we should request upstream to
 # remove embedded libraries from their distribuution, when we can remove
 # them during packaging.
+# It also ensures that pycparser uses the same YACC __tabversion__ as ply
+# package to prevent "yacc table file version is out of date" problem.
+Patch100:       pycparser-unbundle-ply.patch
 
 BuildArch:      noarch
 
-BuildRequires:  python3-devel python3-setuptools
-BuildRequires:  dos2unix
+BuildRequires:  python3-devel
+BuildRequires:  python3-setuptools
 BuildRequires:  python3-ply
 
 # for unit tests
@@ -35,8 +33,7 @@ It is a module designed to be easily integrated into applications that
 need to parse C source code.
 
 %package -n python3-pycparser
-Summary:        C parser and AST generator written in Python
-Requires:       python3-ply = %{ply_version}
+Summary:        %{summary}
 %{?python_provide:%python_provide python3-pycparser}
 
 %description -n python3-pycparser
@@ -45,20 +42,18 @@ It is a module designed to be easily integrated into applications that
 need to parse C source code.
 
 %prep
-%setup -q -n pycparser-release_v%{version}
-%patch100 -p1 -F5 -b .ply
+%autosetup -p1 -n pycparser-release_v%{version}
 
 # remove embedded copy of ply
-rm -rf pycparser/ply
+rm -r pycparser/ply
 
-# examples
-%{__python3} %{SOURCE1} examples
-dos2unix LICENSE
+# Remove relative sys.path from the examples
+%{python3} %{SOURCE1} examples
 
 %build
 %py3_build
 pushd build/lib/pycparser
-%{__python3} _build_tables.py
+%{python3} _build_tables.py
 popd
 
 %install
@@ -66,7 +61,7 @@ popd
 
 %check
 %if %{with tests}
-%{__python3} tests/all_tests.py 
+%{python3} tests/all_tests.py
 %endif
  
 %files -n python3-pycparser
@@ -76,6 +71,9 @@ popd
 %{python3_sitelib}/pycparser-*.egg-info/
 
 %changelog
+* Fri Jun 05 2020 Miro Hrončok <mhroncok@redhat.com> - 2.20-1
+- Update to 2.20 (#1810349)
+
 * Sat May 23 2020 Miro Hrončok <mhroncok@redhat.com> - 2.19-3
 - Rebuilt for Python 3.9
 
diff --git a/sources b/sources
index 9e5ebdb..4789666 100644
--- a/sources
+++ b/sources
@@ -1 +1 @@
-SHA512 (release_v2.19.tar.gz) = 88fe63c1a7a344c564dfd3b4f99735a4159c8a3f5738bab839943ea7fcbf1f5340f67326550b7e66508ea5862897e5bcdf363c2a8d47eccb50890573a2640a98
+SHA512 (release_v2.20.tar.gz) = d2dc48727750ec0a80d5e3b0c9fba390c3647416a3e18cad59429edb9f55d043c7695c52301b037c93af5d96ffc85fcba7cd54d376abdb89e973759c59fa189d