diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 099626f..4fcfdf7 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.8.0"
+  ".": "1.9.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index b08927b..80dcfe6 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.9.0](https://github.com/googleapis/python-billing/compare/v1.8.0...v1.9.0) (2023-01-10)
+
+
+### Features
+
+* Add support for python 3.11 ([#228](https://github.com/googleapis/python-billing/issues/228)) ([5e14095](https://github.com/googleapis/python-billing/commit/5e140954e89a9d12655f107eb17d80274e7f00cc))
+
 ## [1.8.0](https://github.com/googleapis/python-billing/compare/v1.7.3...v1.8.0) (2022-12-15)
 
 
diff --git a/google/cloud/billing/gapic_version.py b/google/cloud/billing/gapic_version.py
index b334dcc..163d151 100644
--- a/google/cloud/billing/gapic_version.py
+++ b/google/cloud/billing/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "1.8.0"  # {x-release-please-version}
+__version__ = "1.9.0"  # {x-release-please-version}
diff --git a/google/cloud/billing_v1/gapic_version.py b/google/cloud/billing_v1/gapic_version.py
index b334dcc..163d151 100644
--- a/google/cloud/billing_v1/gapic_version.py
+++ b/google/cloud/billing_v1/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "1.8.0"  # {x-release-please-version}
+__version__ = "1.9.0"  # {x-release-please-version}
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.billing.v1.json b/samples/generated_samples/snippet_metadata_google.cloud.billing.v1.json
index baa1682..98e06b8 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.billing.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.billing.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-billing",
-    "version": "0.1.0"
+    "version": "1.9.0"
   },
   "snippets": [
     {