diff --git a/CHANGELOG.md b/CHANGELOG.md
index a0539af01e..c398f17d43 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,27 @@
 
 [1]: https://pypi.org/project/bigframes/#history
 
+## [1.21.0](https://github.com/googleapis/python-bigquery-dataframes/compare/v1.20.0...v1.21.0) (2024-10-02)
+
+
+### Features
+
+* Add deprecation warning to PaLM2TextGenerator model ([#1035](https://github.com/googleapis/python-bigquery-dataframes/issues/1035)) ([1183b0f](https://github.com/googleapis/python-bigquery-dataframes/commit/1183b0fb2be7af7386e4bd0d0d1312433db60454))
+* Add DeprecationWarning for PaLM2TextEmbeddingGenerator ([#1018](https://github.com/googleapis/python-bigquery-dataframes/issues/1018)) ([4af5bbb](https://github.com/googleapis/python-bigquery-dataframes/commit/4af5bbb9e42fdb0add17308475c7881d7035fbfd))
+* Add ml.model_selection.cross_validate support ([#1020](https://github.com/googleapis/python-bigquery-dataframes/issues/1020)) ([1a38063](https://github.com/googleapis/python-bigquery-dataframes/commit/1a380631f793f82637cd384601956ee4457dc58a))
+* Allow access of struct fields with dot operators on `Series` ([#1019](https://github.com/googleapis/python-bigquery-dataframes/issues/1019)) ([ef76f13](https://github.com/googleapis/python-bigquery-dataframes/commit/ef76f137fbbf9e8f8c5a63023554d22059ab4fbd))
+
+
+### Bug Fixes
+
+* Ensure no double execution for to_pandas ([#1032](https://github.com/googleapis/python-bigquery-dataframes/issues/1032)) ([4992cc2](https://github.com/googleapis/python-bigquery-dataframes/commit/4992cc27e46bc2b0a908c7d521785989735186f4))
+* Remove pre-caching of remote function results ([#1028](https://github.com/googleapis/python-bigquery-dataframes/issues/1028)) ([0359bc8](https://github.com/googleapis/python-bigquery-dataframes/commit/0359bc85839c37b5cd10c0c418b275ac0dc29c4a))
+
+
+### Documentation
+
+* Add ml cross-validation notebook ([#1037](https://github.com/googleapis/python-bigquery-dataframes/issues/1037)) ([057f3f0](https://github.com/googleapis/python-bigquery-dataframes/commit/057f3f0d694ddffe8745443a85b4fb43081893bb))
+
 ## [1.20.0](https://github.com/googleapis/python-bigquery-dataframes/compare/v1.19.0...v1.20.0) (2024-09-25)
 
 
diff --git a/bigframes/version.py b/bigframes/version.py
index 60f4942175..c07f26bc6f 100644
--- a/bigframes/version.py
+++ b/bigframes/version.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "1.20.0"
+__version__ = "1.21.0"
diff --git a/third_party/bigframes_vendored/version.py b/third_party/bigframes_vendored/version.py
index 60f4942175..c07f26bc6f 100644
--- a/third_party/bigframes_vendored/version.py
+++ b/third_party/bigframes_vendored/version.py
@@ -12,4 +12,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-__version__ = "1.20.0"
+__version__ = "1.21.0"