diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index a25d1bc0..179a5366 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-  ".": "1.15.0"
+  ".": "1.15.1"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index a8723c3e..bcd6a1e7 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.15.1](https://github.com/googleapis/python-retail/compare/v1.15.0...v1.15.1) (2023-03-23)
+
+
+### Documentation
+
+* Fix formatting of request arg in docstring ([#402](https://github.com/googleapis/python-retail/issues/402)) ([5477f18](https://github.com/googleapis/python-retail/commit/5477f18cc2c3e1c755278b386632a778e121b93c))
+
 ## [1.15.0](https://github.com/googleapis/python-retail/compare/v1.14.1...v1.15.0) (2023-02-28)
 
 
diff --git a/google/cloud/retail/gapic_version.py b/google/cloud/retail/gapic_version.py
index 7e4ae77c..e6d1e913 100644
--- a/google/cloud/retail/gapic_version.py
+++ b/google/cloud/retail/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "1.15.0"  # {x-release-please-version}
+__version__ = "1.15.1"  # {x-release-please-version}
diff --git a/google/cloud/retail_v2/gapic_version.py b/google/cloud/retail_v2/gapic_version.py
index 7e4ae77c..e6d1e913 100644
--- a/google/cloud/retail_v2/gapic_version.py
+++ b/google/cloud/retail_v2/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "1.15.0"  # {x-release-please-version}
+__version__ = "1.15.1"  # {x-release-please-version}
diff --git a/google/cloud/retail_v2alpha/gapic_version.py b/google/cloud/retail_v2alpha/gapic_version.py
index 7e4ae77c..e6d1e913 100644
--- a/google/cloud/retail_v2alpha/gapic_version.py
+++ b/google/cloud/retail_v2alpha/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "1.15.0"  # {x-release-please-version}
+__version__ = "1.15.1"  # {x-release-please-version}
diff --git a/google/cloud/retail_v2beta/gapic_version.py b/google/cloud/retail_v2beta/gapic_version.py
index 7e4ae77c..e6d1e913 100644
--- a/google/cloud/retail_v2beta/gapic_version.py
+++ b/google/cloud/retail_v2beta/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "1.15.0"  # {x-release-please-version}
+__version__ = "1.15.1"  # {x-release-please-version}
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.retail.v2.json b/samples/generated_samples/snippet_metadata_google.cloud.retail.v2.json
index 015f4680..1f010abf 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.retail.v2.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.retail.v2.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-retail",
-    "version": "0.1.0"
+    "version": "1.15.1"
   },
   "snippets": [
     {
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.retail.v2alpha.json b/samples/generated_samples/snippet_metadata_google.cloud.retail.v2alpha.json
index a60cdddc..34479a5b 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.retail.v2alpha.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.retail.v2alpha.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-retail",
-    "version": "0.1.0"
+    "version": "1.15.1"
   },
   "snippets": [
     {
diff --git a/samples/generated_samples/snippet_metadata_google.cloud.retail.v2beta.json b/samples/generated_samples/snippet_metadata_google.cloud.retail.v2beta.json
index 5b308dd9..f33d21cd 100644
--- a/samples/generated_samples/snippet_metadata_google.cloud.retail.v2beta.json
+++ b/samples/generated_samples/snippet_metadata_google.cloud.retail.v2beta.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-retail",
-    "version": "0.1.0"
+    "version": "1.15.1"
   },
   "snippets": [
     {