diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 96f1cd9..9049e2f 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.3.0"
+  ".": "1.3.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index f025929..27df7bc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.3.1](https://github.com/googleapis/python-optimization/compare/v1.3.0...v1.3.1) (2023-01-20)
+
+
+### Documentation
+
+* Add documentation for enums ([#103](https://github.com/googleapis/python-optimization/issues/103)) ([1761203](https://github.com/googleapis/python-optimization/commit/176120362d252633be0ed96cc6d1025f908a886c))
+
 ## [1.3.0](https://github.com/googleapis/python-optimization/compare/v1.2.0...v1.3.0) (2023-01-10)
 
 
diff --git a/google/cloud/optimization/gapic_version.py b/google/cloud/optimization/gapic_version.py
index e4a285c..c17d0b7 100644
--- a/google/cloud/optimization/gapic_version.py
+++ b/google/cloud/optimization/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "1.3.0"  # {x-release-please-version}
+__version__ = "1.3.1"  # {x-release-please-version}
diff --git a/google/cloud/optimization_v1/gapic_version.py b/google/cloud/optimization_v1/gapic_version.py
index e4a285c..c17d0b7 100644
--- a/google/cloud/optimization_v1/gapic_version.py
+++ b/google/cloud/optimization_v1/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "1.3.0"  # {x-release-please-version}
+__version__ = "1.3.1"  # {x-release-please-version}
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.optimization.v1.json b/samples/generated_samples/snippet_metadata_google.cloud.optimization.v1.json
index d38082d..10214ad 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.optimization.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.optimization.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-optimization",
-    "version": "0.1.0"
+    "version": "1.3.1"
   },
   "snippets": [
     {