chore: release 1.20.1 (#582)

* chore: updated CHANGELOG.md [ci skip]

* chore: updated setup.cfg [ci skip]

* chore: updated setup.py

Co-authored-by: release-please[bot] <55107282+release-please[bot]@users.noreply.github.com>
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a7e71f2..56faf8e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,14 @@
 
 [1]: https://pypi.org/project/google-auth/#history
 
+### [1.20.1](https://www.github.com/googleapis/google-auth-library-python/compare/v1.20.0...v1.20.1) (2020-08-06)
+
+
+### Bug Fixes
+
+* reduce refresh clock skew to 10 seconds ([#581](https://www.github.com/googleapis/google-auth-library-python/issues/581)) ([42321ba](https://www.github.com/googleapis/google-auth-library-python/commit/42321bafd38a8bd806f4d01bfa0eda3b5a961667))
+* set Content-Type header in the request to signBlob API to avoid Invalid JSON payload error ([#439](https://www.github.com/googleapis/google-auth-library-python/issues/439)) ([20f82e2](https://www.github.com/googleapis/google-auth-library-python/commit/20f82e22b7e8c6c7fdd29e08eaf7b4cf2abdcf37))
+
 ## [1.20.0](https://www.github.com/googleapis/google-auth-library-python/compare/v1.19.2...v1.20.0) (2020-07-23)
 
 
diff --git a/setup.py b/setup.py
index 5b192b1..cfa7b0a 100644
--- a/setup.py
+++ b/setup.py
@@ -33,7 +33,7 @@
 with io.open("README.rst", "r") as fh:
     long_description = fh.read()
 
-version = "1.20.0"
+version = "1.20.1"
 
 setup(
     name="google-auth",