diff --git a/CHANGELOG.md b/CHANGELOG.md
index e00e424c..f85c452e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@
 
 [1]: https://pypi.org/project/google-api-core/#history
 
+### [1.31.2](https://www.github.com/googleapis/python-api-core/compare/v1.31.1...v1.31.2) (2021-08-03)
+
+
+### Bug Fixes
+
+* strip trailing _ from field mask paths ([#228](https://www.github.com/googleapis/python-api-core/issues/228)) ([ff6ef1b](https://www.github.com/googleapis/python-api-core/commit/ff6ef1bd07fa68307b7c82c910416d770e7b3416))
+
 ### [1.31.1](https://www.github.com/googleapis/python-api-core/compare/v1.31.0...v1.31.1) (2021-07-26)
 
 
diff --git a/google/api_core/version.py b/google/api_core/version.py
index 5fd0b133..3dc5937f 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__ = "1.31.1"
+__version__ = "1.31.2"