diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index 8dac71dc4a..77356c567b 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,3 +1,3 @@
 {
-    ".": "3.45.0"
+    ".": "3.46.0"
 }
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 8dceb4eaa6..358133ef1e 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -4,6 +4,18 @@
 
 [1]: https://pypi.org/project/google-cloud-spanner/#history
 
+## [3.46.0](https://github.com/googleapis/python-spanner/compare/v3.45.0...v3.46.0) (2024-05-02)
+
+
+### Features
+
+* **spanner:** Adding EXPECTED_FULFILLMENT_PERIOD to the indicate instance creation times (with FULFILLMENT_PERIOD_NORMAL or FULFILLMENT_PERIOD_EXTENDED ENUM) with the extended instance creation time triggered by On-Demand Capacity Feature ([293ecda](https://github.com/googleapis/python-spanner/commit/293ecdad78b51f248f8d5c023bdba3bac998ea5c))
+
+
+### Documentation
+
+* Remove duplicate paramter description ([#1052](https://github.com/googleapis/python-spanner/issues/1052)) ([1164743](https://github.com/googleapis/python-spanner/commit/116474318d42a6f1ea0f9c2f82707e5dde281159))
+
 ## [3.45.0](https://github.com/googleapis/python-spanner/compare/v3.44.0...v3.45.0) (2024-04-17)
 
 
diff --git a/google/cloud/spanner_admin_database_v1/gapic_version.py b/google/cloud/spanner_admin_database_v1/gapic_version.py
index 2e808494c6..4d1f04f803 100644
--- a/google/cloud/spanner_admin_database_v1/gapic_version.py
+++ b/google/cloud/spanner_admin_database_v1/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "3.45.0"  # {x-release-please-version}
+__version__ = "3.46.0"  # {x-release-please-version}
diff --git a/google/cloud/spanner_admin_instance_v1/gapic_version.py b/google/cloud/spanner_admin_instance_v1/gapic_version.py
index 2e808494c6..4d1f04f803 100644
--- a/google/cloud/spanner_admin_instance_v1/gapic_version.py
+++ b/google/cloud/spanner_admin_instance_v1/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "3.45.0"  # {x-release-please-version}
+__version__ = "3.46.0"  # {x-release-please-version}
diff --git a/google/cloud/spanner_v1/gapic_version.py b/google/cloud/spanner_v1/gapic_version.py
index 2e808494c6..4d1f04f803 100644
--- a/google/cloud/spanner_v1/gapic_version.py
+++ b/google/cloud/spanner_v1/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "3.45.0"  # {x-release-please-version}
+__version__ = "3.46.0"  # {x-release-please-version}
diff --git a/samples/generated_samples/snippet_metadata_google.spanner.admin.database.v1.json b/samples/generated_samples/snippet_metadata_google.spanner.admin.database.v1.json
index 11932ae5e8..f0df60123f 100644
--- a/samples/generated_samples/snippet_metadata_google.spanner.admin.database.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.spanner.admin.database.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-spanner-admin-database",
-    "version": "0.1.0"
+    "version": "3.46.0"
   },
   "snippets": [
     {
diff --git a/samples/generated_samples/snippet_metadata_google.spanner.admin.instance.v1.json b/samples/generated_samples/snippet_metadata_google.spanner.admin.instance.v1.json
index 0811b451cb..89fcfef090 100644
--- a/samples/generated_samples/snippet_metadata_google.spanner.admin.instance.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.spanner.admin.instance.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-spanner-admin-instance",
-    "version": "0.1.0"
+    "version": "3.46.0"
   },
   "snippets": [
     {
diff --git a/samples/generated_samples/snippet_metadata_google.spanner.v1.json b/samples/generated_samples/snippet_metadata_google.spanner.v1.json
index 4384d19e2a..b6e649ec8a 100644
--- a/samples/generated_samples/snippet_metadata_google.spanner.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.spanner.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-spanner",
-    "version": "0.1.0"
+    "version": "3.46.0"
   },
   "snippets": [
     {