diff --git a/README.rst b/README.rst
index 516f663..4bd1414 100644
--- a/README.rst
+++ b/README.rst
@@ -20,5 +20,5 @@ trace processes) written in Python.
 * `python-ptrace at the Python Cheeseshop (PyPI)
   <https://pypi.python.org/pypi/python-ptrace>`_
 
-python-ptrace is an opensource project written in Python under GNU GPLv2
+python-ptrace is an opensource project written in Python under GNU GPL-2.0-only
 license. It supports Python 3.6 and newer.
diff --git a/cptrace/version.py b/cptrace/version.py
index 5f35e7d..8397b3e 100644
--- a/cptrace/version.py
+++ b/cptrace/version.py
@@ -1,4 +1,4 @@
 PACKAGE = "cptrace"
 VERSION = "0.6.1"
 WEBSITE = "http://python-ptrace.readthedocs.io/"
-LICENSE = "GNU GPL v2"
+LICENSE = "GPL-2.0-only"
diff --git a/doc/index.rst b/doc/index.rst
index 78bffaa..c11f356 100644
--- a/doc/index.rst
+++ b/doc/index.rst
@@ -18,7 +18,7 @@ trace processes) written in Python.
 * `python-ptrace at the Python Cheeseshop (PyPI)
   <https://pypi.python.org/pypi/python-ptrace>`_
 
-python-ptrace is an opensource project written in Python under GNU GPLv2
+python-ptrace is an opensource project written in Python under GNU GPL-2.0-only
 license. It supports Python 3.6 and newer.
 
 
diff --git a/ptrace/version.py b/ptrace/version.py
index 466c013..21c5ae3 100644
--- a/ptrace/version.py
+++ b/ptrace/version.py
@@ -2,4 +2,4 @@
 VERSION = (0, 9, 10)
 __version__ = '.'.join(map(str, VERSION))
 WEBSITE = "http://python-ptrace.readthedocs.io/"
-LICENSE = "GNU GPL v2"
+LICENSE = "GPL-2.0-only"
diff --git a/setup.py b/setup.py
index ad54f9a..6c4e2d1 100755
--- a/setup.py
+++ b/setup.py
@@ -45,7 +45,7 @@
     'Intended Audience :: Developers',
     'Development Status :: 4 - Beta',
     'Environment :: Console',
-    'License :: OSI Approved :: GNU General Public License (GPL)',
+    'License :: OSI Approved :: GNU General Public License v2 (GPLv2)',
     'Operating System :: OS Independent',
     'Natural Language :: English',
     'Programming Language :: Python',
diff --git a/setup_cptrace.py b/setup_cptrace.py
index f06b792..bf1c0b0 100755
--- a/setup_cptrace.py
+++ b/setup_cptrace.py
@@ -8,7 +8,7 @@
     'Intended Audience :: Developers',
     'Development Status :: 4 - Beta',
     'Environment :: Console',
-    'License :: OSI Approved :: GNU General Public License (GPL)',
+    'License :: OSI Approved :: GNU General Public License v2 (GPLv2)',
     'Operating System :: OS Independent',
     'Natural Language :: English',
     'Programming Language :: C',