diff --git a/.release-please-manifest.json b/.release-please-manifest.json
index e97945cb8..65444fe37 100644
--- a/.release-please-manifest.json
+++ b/.release-please-manifest.json
@@ -1,4 +1,4 @@
 {
-    ".": "2.18.2"
+    ".": "2.18.3"
 }
   
\ No newline at end of file
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 53108031e..2d4672c75 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -5,6 +5,13 @@
 [1]: https://pypi.org/project/google-cloud-pubsub/#history
 
 
+## [2.18.3](https://github.com/googleapis/python-pubsub/compare/v2.18.2...v2.18.3) (2023-08-18)
+
+
+### Bug Fixes
+
+* Make retry policy back off more aggressively for RPCs that retry RESOURCE_EXHAUSTD ([#979](https://github.com/googleapis/python-pubsub/issues/979)) ([4073b3d](https://github.com/googleapis/python-pubsub/commit/4073b3dd6a6989e86d5e19bdb9b9c47ae2b0db87))
+
 ## [2.18.2](https://github.com/googleapis/python-pubsub/compare/v2.18.1...v2.18.2) (2023-08-07)
 
 
diff --git a/google/pubsub/gapic_version.py b/google/pubsub/gapic_version.py
index 6f338c034..573fcecc0 100644
--- a/google/pubsub/gapic_version.py
+++ b/google/pubsub/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "2.18.2"  # {x-release-please-version}
+__version__ = "2.18.3"  # {x-release-please-version}
diff --git a/google/pubsub_v1/gapic_version.py b/google/pubsub_v1/gapic_version.py
index 6f338c034..573fcecc0 100644
--- a/google/pubsub_v1/gapic_version.py
+++ b/google/pubsub_v1/gapic_version.py
@@ -13,4 +13,4 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 #
-__version__ = "2.18.2"  # {x-release-please-version}
+__version__ = "2.18.3"  # {x-release-please-version}
diff --git a/samples/generated_samples/snippet_metadata_google.pubsub.v1.json b/samples/generated_samples/snippet_metadata_google.pubsub.v1.json
index 8c531f980..9e218e52e 100644
--- a/samples/generated_samples/snippet_metadata_google.pubsub.v1.json
+++ b/samples/generated_samples/snippet_metadata_google.pubsub.v1.json
@@ -8,7 +8,7 @@
     ],
     "language": "PYTHON",
     "name": "google-cloud-pubsub",
-    "version": "2.18.2"
+    "version": "2.18.3"
   },
   "snippets": [
     {
diff --git a/samples/snippets/requirements-test.txt b/samples/snippets/requirements-test.txt
index 9f0580cbf..0b65f2dfc 100644
--- a/samples/snippets/requirements-test.txt
+++ b/samples/snippets/requirements-test.txt
@@ -3,4 +3,4 @@ pytest==7.4.0
 mock==5.1.0
 flaky==3.7.0
 google-cloud-bigquery==3.11.4
-google-cloud-storage==2.9.0
+google-cloud-storage==2.10.0
diff --git a/samples/snippets/requirements.txt b/samples/snippets/requirements.txt
index dd5fae7c8..f15a75353 100644
--- a/samples/snippets/requirements.txt
+++ b/samples/snippets/requirements.txt
@@ -1,4 +1,4 @@
-google-cloud-pubsub==2.18.1
+google-cloud-pubsub==2.18.2
 avro==1.11.2
-protobuf==4.21.9
+protobuf==4.24.0
 avro==1.11.2