diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1bbde644..e65e1b7a 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@
 
 [1]: https://pypi.org/project/google-api-core/#history
 
+### [1.27.1](https://www.github.com/googleapis/python-api-core/compare/v1.27.0...v1.27.1) (2021-05-20)
+
+
+### Bug Fixes
+
+* require google-auth>=1.25.0 ([#190](https://www.github.com/googleapis/python-api-core/issues/190)) ([155da5e](https://www.github.com/googleapis/python-api-core/commit/155da5e18cc2fdcfa57de6f956b7d078e79cd4b7))
+
 ## [1.27.0](https://www.github.com/googleapis/python-api-core/compare/v1.26.3...v1.27.0) (2021-05-18)
 
 
diff --git a/google/api_core/version.py b/google/api_core/version.py
index d08f8b41..6627cbb1 100644
--- a/google/api_core/version.py
+++ b/google/api_core/version.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "1.27.0"
+__version__ = "1.27.1"