diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index f2db52b4..1ff4c05f 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,4 +1,4 @@
 {
-    ".": "2.20.1"
+    ".": "2.21.0"
 }
   
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 420b9da6..b2b6e448 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@
 
 [1]: https://pypi.org/project/google-cloud-speech/#history
 
+## [2.21.0](https://github.com/googleapis/python-speech/compare/v2.20.1...v2.21.0) (2023-07-05)
+
+
+### Features
+
+* Add `model` and `language_codes` fields in `RecognitionConfig` message + enable default `_` recognizer ([#524](https://github.com/googleapis/python-speech/issues/524)) ([65971c5](https://github.com/googleapis/python-speech/commit/65971c547587cb85e752b25a836e0a7ac41eee48))
+
 ## [2.20.1](https://github.com/googleapis/python-speech/compare/v2.20.0...v2.20.1) (2023-07-04)
 
 
diff --git a/google/cloud/speech/gapic_version.py b/google/cloud/speech/gapic_version.py
index 5585b0b1..e546bae0 100644
--- a/google/cloud/speech/gapic_version.py
+++ b/google/cloud/speech/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "2.20.1"  # {x-release-please-version}
+__version__ = "2.21.0"  # {x-release-please-version}
diff --git a/google/cloud/speech_v1/gapic_version.py b/google/cloud/speech_v1/gapic_version.py
index 5585b0b1..e546bae0 100644
--- a/google/cloud/speech_v1/gapic_version.py
+++ b/google/cloud/speech_v1/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "2.20.1"  # {x-release-please-version}
+__version__ = "2.21.0"  # {x-release-please-version}
diff --git a/google/cloud/speech_v1p1beta1/gapic_version.py b/google/cloud/speech_v1p1beta1/gapic_version.py
index 5585b0b1..e546bae0 100644
--- a/google/cloud/speech_v1p1beta1/gapic_version.py
+++ b/google/cloud/speech_v1p1beta1/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "2.20.1"  # {x-release-please-version}
+__version__ = "2.21.0"  # {x-release-please-version}
diff --git a/google/cloud/speech_v2/gapic_version.py b/google/cloud/speech_v2/gapic_version.py
index 5585b0b1..e546bae0 100644
--- a/google/cloud/speech_v2/gapic_version.py
+++ b/google/cloud/speech_v2/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "2.20.1"  # {x-release-please-version}
+__version__ = "2.21.0"  # {x-release-please-version}
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.speech.v1.json b/samples/generated_samples/snippet_metadata_google.cloud.speech.v1.json
index c793efe0..58dd1792 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.speech.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.speech.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-speech",
-    "version": "0.1.0"
+    "version": "2.21.0"
   },
   "snippets": [
     {
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.speech.v1p1beta1.json b/samples/generated_samples/snippet_metadata_google.cloud.speech.v1p1beta1.json
index b51d437c..25efd8af 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.speech.v1p1beta1.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.speech.v1p1beta1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-speech",
-    "version": "0.1.0"
+    "version": "2.21.0"
   },
   "snippets": [
     {
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.speech.v2.json b/samples/generated_samples/snippet_metadata_google.cloud.speech.v2.json
index 73ac2fc1..bbf9aaa7 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.speech.v2.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.speech.v2.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-speech",
-    "version": "0.1.0"
+    "version": "2.21.0"
   },
   "snippets": [
     {