diff --git a/agent/app/agent.go b/agent/app/agent.go
index 89bcbd82182..cbff3486dc1 100644
--- a/agent/app/agent.go
+++ b/agent/app/agent.go
@@ -868,7 +868,7 @@ func (agent *ecsAgent) registerContainerInstance(
 			})
 			return terminalError{err}
 		}
-		if utils.IsAWSErrorCodeEqual(err, ecsmodel.ErrCodeClientException) {
+		if utils.IsAWSErrorCodeEqual(err, apierrors.ErrCodeClientException) {
 			logger.Critical("Instance registration attempt with client performing invalid action", logger.Fields{
 				field.Error: err,
 			})
@@ -916,13 +916,13 @@ func (agent *ecsAgent) reregisterContainerInstance(client ecs.ECSClient, capabil
 		seelog.Criticalf(instanceTypeMismatchErrorFormat, err)
 		return terminalError{err}
 	}
-	if utils.IsAWSErrorCodeEqual(err, ecsmodel.ErrCodeInvalidParameterException) {
+	if utils.IsAWSErrorCodeEqual(err, apierrors.ErrCodeInvalidParameterException) {
 		logger.Critical("Instance re-registration attempt with an invalid parameter", logger.Fields{
 			field.Error: err,
 		})
 		return terminalError{err}
 	}
-	if utils.IsAWSErrorCodeEqual(err, ecsmodel.ErrCodeClientException) {
+	if utils.IsAWSErrorCodeEqual(err, apierrors.ErrCodeClientException) {
 		logger.Critical("Instance re-registration attempt with client performing invalid action", logger.Fields{
 			field.Error: err,
 		})
diff --git a/agent/vendor/github.com/aws/amazon-ecs-agent/ecs-agent/api/errors/errors.go b/agent/vendor/github.com/aws/amazon-ecs-agent/ecs-agent/api/errors/errors.go
index daf2dc120ce..3ecd4f5e909 100644
--- a/agent/vendor/github.com/aws/amazon-ecs-agent/ecs-agent/api/errors/errors.go
+++ b/agent/vendor/github.com/aws/amazon-ecs-agent/ecs-agent/api/errors/errors.go
@@ -39,6 +39,8 @@ const (
 	ErrCodeResourceNotFoundException = "ResourceNotFoundException"
 
 	ErrCodeRequestCanceled = "RequestCanceled"
+
+	ErrCodeClientException = "ClientException"
 )
 
 // IsInstanceTypeChangedError returns true if the error when
diff --git a/ecs-agent/api/errors/errors.go b/ecs-agent/api/errors/errors.go
index daf2dc120ce..3ecd4f5e909 100644
--- a/ecs-agent/api/errors/errors.go
+++ b/ecs-agent/api/errors/errors.go
@@ -39,6 +39,8 @@ const (
 	ErrCodeResourceNotFoundException = "ResourceNotFoundException"
 
 	ErrCodeRequestCanceled = "RequestCanceled"
+
+	ErrCodeClientException = "ClientException"
 )
 
 // IsInstanceTypeChangedError returns true if the error when
diff --git a/scripts/amazon-ssm-agent.gpg b/scripts/amazon-ssm-agent.gpg
index 4c094302bbd..238e0dd9c82 100644
--- a/scripts/amazon-ssm-agent.gpg
+++ b/scripts/amazon-ssm-agent.gpg
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