diff --git a/setup.cfg b/setup.cfg
index 7e82510..105445f 100644
--- a/setup.cfg
+++ b/setup.cfg
@@ -1,7 +1,5 @@
 [metadata]
 name = pEp
-#TODO: automate version pull from hg/git
-version = 2.2.0-RC1
 url = https://pep.foundation
 download_url =
 ext_package = pEp
@@ -33,6 +31,11 @@ python_requires = >= 3.6
 test_suite = tests
 setup_requires =
     setuptools >=38.3.0
+    # To automatically write the version from a SCM.
+    # Note: It fails with tags named as `Release_2.2.0-RC0`, because it is
+    # not conforming to semantic versioning, but it succeed with tags as
+    # `2.2.0-rc0`.
+    setuptools_scm
 install_requires =
     setuptools >=38.3.0
 tests_require =
diff --git a/setup.py b/setup.py
index 1d563c5..7884d27 100644
--- a/setup.py
+++ b/setup.py
@@ -223,4 +223,7 @@ setup(
     cmdclass={
         'build_ext': BuildExtCommand,
     },
+    # While not using a pyproject.toml, support setuptools_scm setup.cfg usage,
+    # see https://github.com/pypa/setuptools_scm/#setupcfg-usage
+    use_scm_version=True,
 )