diff --git a/.release-please-manifest-submodules.json b/.release-please-manifest-submodules.json
index b5a1ae6..e046fda 100644
--- a/.release-please-manifest-submodules.json
+++ b/.release-please-manifest-submodules.json
@@ -1,7 +1,7 @@
 {
   "accessapproval": "1.2.0",
   "accesscontextmanager": "1.2.0",
-  "aiplatform": "1.8.0",
+  "aiplatform": "1.9.0",
   "analytics": "0.6.0",
   "apigateway": "1.2.0",
   "apigeeconnect": "1.2.0",
@@ -31,12 +31,12 @@
   "dataqna": "0.3.0",
   "datastream": "0.3.0",
   "deploy": "1.2.0",
-  "dialogflow": "1.8.0",
+  "dialogflow": "1.8.1",
   "dlp": "1.4.0",
   "documentai": "1.4.0",
   "domains": "0.4.0",
   "essentialcontacts": "1.2.0",
-  "eventarc": "1.4.0",
+  "eventarc": "1.5.0",
   "filestore": "1.2.0",
   "functions": "1.3.0",
   "gaming": "1.2.0",
@@ -79,7 +79,7 @@
   "scheduler": "1.2.0",
   "secretmanager": "1.4.0",
   "security": "1.3.0",
-  "securitycenter": "1.6.0",
+  "securitycenter": "1.7.0",
   "servicecontrol": "1.3.0",
   "servicedirectory": "1.2.0",
   "servicemanagement": "1.3.0",
diff --git a/aiplatform/CHANGES.md b/aiplatform/CHANGES.md
index ed61c1b..cb04502 100644
--- a/aiplatform/CHANGES.md
+++ b/aiplatform/CHANGES.md
@@ -1,6 +1,24 @@
 # Changes
 
 
+## [1.9.0](https://github.com/googleapis/google-cloud-go/compare/aiplatform/v1.8.0...aiplatform/v1.9.0) (2022-04-20)
+
+
+### ⚠ BREAKING CHANGES
+
+* **aiplatform:** (php) remove several `REQUIRED` field annotations in featurestore.proto, metadata.proto, and pipeline_job.proto
+* **aiplatform:** (php) remove several `REQUIRED` field annotations in featurestore.proto, metadata.proto, and pipeline_job.proto
+
+### Features
+
+* **aiplatform:** add reserved_ip_ranges to CustomJobSpec in aiplatform v1 custom_job.proto feat: add nfs_mounts to WorkPoolSpec in aiplatform v1 custom_job.proto feat: add JOB_STATE_UPDATING to JobState in aiplatform v1 job_state.proto feat: add MfsMount in aiplatform v1 machine_resources.proto feat: add ConvexAutomatedStoppingSpec to StudySpec in aiplatform v1 study.proto ([e71a99d](https://github.com/googleapis/google-cloud-go/commit/e71a99d3edc21c937aa9d7bfd61288b0073a5275))
+* **aiplatform:** rename Similarity to Examples, and similarity to examples in ExplanationParameters in aiplatform v1beta1 explanation.proto feat: add reserved_ip_ranges to CustomJobSpec in aiplatform v1beta1 custom_job.proto feat: add nfs_mounts to WorkPoolSpec in aiplatform v1beta1 custom_job.proto feat: add PredictRequestResponseLoggingConfig to aiplatform v1beta1 endpoint.proto feat: add model_version_id to DeployedModel in aiplatform v1beta1 endpoint.proto feat: add JOB_STATE_UPDATING to JobState in aiplatform v1beta1 job_state.proto feat: add MfsMount in aiplatform v1beta1 machine_resources.proto feat: add version_id to Model in aiplatform v1beta1 model.proto feat: add LatestMonitoringPipelineMetadata to ModelDeploymentMonitoringJob in aiplatform v1beta1 model_deployment_monitoring_job.proto feat: add ListModelVersion, DeleteModelVersion, and MergeVersionAliases rpcs to aiplatform v1beta1 model_service.proto feat: add model_version_id to UploadModelRequest and UploadModelResponse in aiplatform v1beta1 model_service.proto feat: add model_version_id to PredictResponse in aiplatform v1beta1 prediction_service.proto feat: add ConvexAutomatedStoppingSpec to StudySpec in aiplatform v1beta1 study.proto feat: add model_id and parent_model to TrainingPipeline in aiplatform v1beta1 training_pipeline.proto ([e71a99d](https://github.com/googleapis/google-cloud-go/commit/e71a99d3edc21c937aa9d7bfd61288b0073a5275))
+
+
+### Miscellaneous Chores
+
+* **aiplatform:** release 1.9.0 ([#5921](https://github.com/googleapis/google-cloud-go/issues/5921)) ([a1a59ce](https://github.com/googleapis/google-cloud-go/commit/a1a59ce55a289f88a46508dfccf52ce5517a9c8b))
+
 ## [1.8.0](https://github.com/googleapis/google-cloud-go/compare/aiplatform/v1.7.0...aiplatform/v1.8.0) (2022-04-06)
 
 
diff --git a/aiplatform/internal/version.go b/aiplatform/internal/version.go
index 0ad9373..37e23cd 100644
--- a/aiplatform/internal/version.go
+++ b/aiplatform/internal/version.go
@@ -15,4 +15,4 @@
 package internal
 
 // Version is the current tagged release of the library.
-const Version = "1.8.0"
+const Version = "1.9.0"
diff --git a/dialogflow/CHANGES.md b/dialogflow/CHANGES.md
index d3dd61b..58a6119 100644
--- a/dialogflow/CHANGES.md
+++ b/dialogflow/CHANGES.md
@@ -1,5 +1,12 @@
 # Changes
 
+### [1.8.1](https://github.com/googleapis/google-cloud-go/compare/dialogflow/v1.8.0...dialogflow/v1.8.1) (2022-04-20)
+
+
+### Bug Fixes
+
+* **dialogflow:** correct broken ConversationModelEvaluation resource pattern ([689cad9](https://github.com/googleapis/google-cloud-go/commit/689cad94fdcf54cebd22aecfcdad4d8b44f58df9))
+
 ## [1.8.0](https://github.com/googleapis/google-cloud-go/compare/dialogflow/v1.7.0...dialogflow/v1.8.0) (2022-04-06)
 
 
diff --git a/dialogflow/internal/version.go b/dialogflow/internal/version.go
index 0ad9373..0212cf2 100644
--- a/dialogflow/internal/version.go
+++ b/dialogflow/internal/version.go
@@ -15,4 +15,4 @@
 package internal
 
 // Version is the current tagged release of the library.
-const Version = "1.8.0"
+const Version = "1.8.1"
diff --git a/eventarc/CHANGES.md b/eventarc/CHANGES.md
index f6a12e4..58ddc73 100644
--- a/eventarc/CHANGES.md
+++ b/eventarc/CHANGES.md
@@ -1,5 +1,12 @@
 # Changes
 
+## [1.5.0](https://github.com/googleapis/google-cloud-go/compare/eventarc/v1.4.0...eventarc/v1.5.0) (2022-04-20)
+
+
+### Features
+
+* **eventarc/publishing:** Add publishing methods for channel resources ([689cad9](https://github.com/googleapis/google-cloud-go/commit/689cad94fdcf54cebd22aecfcdad4d8b44f58df9))
+
 ## [1.4.0](https://github.com/googleapis/google-cloud-go/compare/eventarc/v1.3.0...eventarc/v1.4.0) (2022-02-23)
 
 
diff --git a/eventarc/internal/version.go b/eventarc/internal/version.go
index 9fa087b..e93235c 100644
--- a/eventarc/internal/version.go
+++ b/eventarc/internal/version.go
@@ -15,4 +15,4 @@
 package internal
 
 // Version is the current tagged release of the library.
-const Version = "1.4.0"
+const Version = "1.5.0"
diff --git a/securitycenter/CHANGES.md b/securitycenter/CHANGES.md
index aa91e17..09918a7 100644
--- a/securitycenter/CHANGES.md
+++ b/securitycenter/CHANGES.md
@@ -1,5 +1,12 @@
 # Changes
 
+## [1.7.0](https://github.com/googleapis/google-cloud-go/compare/securitycenter/v1.6.0...securitycenter/v1.7.0) (2022-04-20)
+
+
+### Features
+
+* **securitycenter:** Add connection and description field to finding's list of attributes ([689cad9](https://github.com/googleapis/google-cloud-go/commit/689cad94fdcf54cebd22aecfcdad4d8b44f58df9))
+
 ## [1.6.0](https://github.com/googleapis/google-cloud-go/compare/securitycenter/v1.5.0...securitycenter/v1.6.0) (2022-04-14)
 
 
diff --git a/securitycenter/internal/version.go b/securitycenter/internal/version.go
index 05d3396..7c251d9 100644
--- a/securitycenter/internal/version.go
+++ b/securitycenter/internal/version.go
@@ -15,4 +15,4 @@
 package internal
 
 // Version is the current tagged release of the library.
-const Version = "1.6.0"
+const Version = "1.7.0"