diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 064e56a..44204dd 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-    ".": "1.8.1"
+    ".": "1.9.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 3ffd14c..6490d8c 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,13 @@
 
 [1]: https://pypi.org/project/google-cloud-resource-manager/#history
 
+## [1.9.0](https://github.com/googleapis/python-resource-manager/compare/v1.8.1...v1.9.0) (2023-02-28)
+
+
+### Features
+
+* Enable "rest" transport in Python for services supporting numeric enums ([c146fa0](https://github.com/googleapis/python-resource-manager/commit/c146fa03ee5b062507c951209081b0755ff4f2e2))
+
 ## [1.8.1](https://github.com/googleapis/python-resource-manager/compare/v1.8.0...v1.8.1) (2023-01-20)
 
 
diff --git a/google/cloud/resourcemanager/gapic_version.py b/google/cloud/resourcemanager/gapic_version.py
index 90e0293..163d151 100644
--- a/google/cloud/resourcemanager/gapic_version.py
+++ b/google/cloud/resourcemanager/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "1.8.1"  # {x-release-please-version}
+__version__ = "1.9.0"  # {x-release-please-version}
diff --git a/google/cloud/resourcemanager_v3/gapic_version.py b/google/cloud/resourcemanager_v3/gapic_version.py
index 90e0293..163d151 100644
--- a/google/cloud/resourcemanager_v3/gapic_version.py
+++ b/google/cloud/resourcemanager_v3/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "1.8.1"  # {x-release-please-version}
+__version__ = "1.9.0"  # {x-release-please-version}
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.resourcemanager.v3.json b/samples/generated_samples/snippet_metadata_google.cloud.resourcemanager.v3.json
index bd24c8e..7138c17 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.resourcemanager.v3.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.resourcemanager.v3.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-resource-manager",
-    "version": "0.1.0"
+    "version": "1.9.0"
   },
   "snippets": [
     {