diff --git a/.release-please-preview-manifest.json b/.release-please-preview-manifest.json
index 4e9d97291c1b..9f59a0ea3188 100644
--- a/.release-please-preview-manifest.json
+++ b/.release-please-preview-manifest.json
@@ -1,3 +1,3 @@
 {
-  "preview-packages/google-cloud-compute": "1.56.0-preview.2"
+  "preview-packages/google-cloud-compute": "1.56.0-preview.3"
 }
diff --git a/librarian.yaml b/librarian.yaml
index eed01ce32d45..560ee8229fbd 100644
--- a/librarian.yaml
+++ b/librarian.yaml
@@ -798,7 +798,7 @@ libraries:
   - name: google-cloud-compute
     version: 1.56.0
     preview:
-      version: 1.56.0-preview.2
+      version: 1.56.0-preview.3
       apis:
         - path: google/cloud/compute/v1
     apis:
diff --git a/preview-packages/google-cloud-compute/CHANGELOG.md b/preview-packages/google-cloud-compute/CHANGELOG.md
index 748ee560f85a..261c0954adfd 100644
--- a/preview-packages/google-cloud-compute/CHANGELOG.md
+++ b/preview-packages/google-cloud-compute/CHANGELOG.md
@@ -1,5 +1,12 @@
 # Changelog
 
+## [1.56.0-preview.3](https://github.com/googleapis/google-cloud-python/compare/google-cloud-compute-v1.56.0-preview.2...google-cloud-compute-v1.56.0-preview.3) (2026-11-05)
+
+
+### Features
+
+* update API sources and regenerate ([#18986](https://github.com/googleapis/google-cloud-python/issues/18986)) ([8c0f333](https://github.com/googleapis/google-cloud-python/commit/8c0f3331260667eb64c70db80a7ab5c52b8ccf36))
+
 ## [1.56.0-preview.2](https://github.com/googleapis/google-cloud-python/compare/google-cloud-compute-v1.56.0-preview.1...google-cloud-compute-v1.56.0-preview.2) (2026-10-29)
 
 
diff --git a/preview-packages/google-cloud-compute/google/cloud/compute/gapic_version.py b/preview-packages/google-cloud-compute/google/cloud/compute/gapic_version.py
index b2ede2813fed..f6d4a31ff0fc 100644
--- a/preview-packages/google-cloud-compute/google/cloud/compute/gapic_version.py
+++ b/preview-packages/google-cloud-compute/google/cloud/compute/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "1.56.0-preview.2"  # {x-release-please-version}
+__version__ = "1.56.0-preview.3"  # {x-release-please-version}
diff --git a/preview-packages/google-cloud-compute/google/cloud/compute_v1/gapic_version.py b/preview-packages/google-cloud-compute/google/cloud/compute_v1/gapic_version.py
index b2ede2813fed..f6d4a31ff0fc 100644
--- a/preview-packages/google-cloud-compute/google/cloud/compute_v1/gapic_version.py
+++ b/preview-packages/google-cloud-compute/google/cloud/compute_v1/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "1.56.0-preview.2"  # {x-release-please-version}
+__version__ = "1.56.0-preview.3"  # {x-release-please-version}
diff --git a/preview-packages/google-cloud-compute/samples/generated_samples/snippet_metadata_google.cloud.compute.v1.json b/preview-packages/google-cloud-compute/samples/generated_samples/snippet_metadata_google.cloud.compute.v1.json
index 1717884790c7..7f8d69db8467 100644
--- a/preview-packages/google-cloud-compute/samples/generated_samples/snippet_metadata_google.cloud.compute.v1.json
+++ b/preview-packages/google-cloud-compute/samples/generated_samples/snippet_metadata_google.cloud.compute.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-compute",
-    "version": "1.56.0-preview.2"
+    "version": "1.56.0-preview.3"
   },
   "snippets": [
     {