diff --git a/blob/s3blob/s3blob.go b/blob/s3blob/s3blob.go
index a7ef34f9db..3447c9fd37 100644
--- a/blob/s3blob/s3blob.go
+++ b/blob/s3blob/s3blob.go
@@ -251,6 +251,8 @@ func openBucket(ctx context.Context, useV2 bool, sess client.ConfigProvider, cli
 // AWS buckets are bound to a region; sess must have been created using an
 // aws.Config with Region set to the right region for bucketName.
 // See the package documentation for an example.
+//
+// Deprecated: AWS no longer supports their V1 API. Please migrate to OpenBucketV2.
 func OpenBucket(ctx context.Context, sess client.ConfigProvider, bucketName string, opts *Options) (*blob.Bucket, error) {
 	drv, err := openBucket(ctx, false, sess, nil, bucketName, opts)
 	if err != nil {
diff --git a/pubsub/awssnssqs/awssnssqs.go b/pubsub/awssnssqs/awssnssqs.go
index e31e1cc195..3cf35870c6 100644
--- a/pubsub/awssnssqs/awssnssqs.go
+++ b/pubsub/awssnssqs/awssnssqs.go
@@ -373,12 +373,16 @@ type TopicOptions struct {
 }
 
 // OpenTopic is a shortcut for OpenSNSTopic, provided for backwards compatibility.
+//
+// Deprecated: AWS no longer supports their V1 API. Please migrate to OpenSNSTopicV2.
 func OpenTopic(ctx context.Context, sess client.ConfigProvider, topicARN string, opts *TopicOptions) *pubsub.Topic {
 	return OpenSNSTopic(ctx, sess, topicARN, opts)
 }
 
 // OpenSNSTopic opens a topic that sends to the SNS topic with the given Amazon
 // Resource Name (ARN).
+//
+// Deprecated: AWS no longer supports their V1 API. Please migrate to OpenSNSTopicV2.
 func OpenSNSTopic(ctx context.Context, sess client.ConfigProvider, topicARN string, opts *TopicOptions) *pubsub.Topic {
 	if opts == nil {
 		opts = &TopicOptions{}
@@ -747,6 +751,8 @@ type sqsTopic struct {
 
 // OpenSQSTopic opens a topic that sends to the SQS topic with the given SQS
 // queue URL.
+//
+// Deprecated: AWS no longer supports their V1 API. Please migrate to OpenSQSTopicV2.
 func OpenSQSTopic(ctx context.Context, sess client.ConfigProvider, qURL string, opts *TopicOptions) *pubsub.Topic {
 	if opts == nil {
 		opts = &TopicOptions{}
@@ -1110,6 +1116,8 @@ type SubscriptionOptions struct {
 // OpenSubscription opens a subscription based on AWS SQS for the given SQS
 // queue URL. The queue is assumed to be subscribed to some SNS topic, though
 // there is no check for this.
+//
+// Deprecated: AWS no longer supports their V1 API. Please migrate to OpenSubscriptionV2.
 func OpenSubscription(ctx context.Context, sess client.ConfigProvider, qURL string, opts *SubscriptionOptions) *pubsub.Subscription {
 	if opts == nil {
 		opts = &SubscriptionOptions{}
diff --git a/runtimevar/awsparamstore/awsparamstore.go b/runtimevar/awsparamstore/awsparamstore.go
index dd0f89c793..61885bb1a1 100644
--- a/runtimevar/awsparamstore/awsparamstore.go
+++ b/runtimevar/awsparamstore/awsparamstore.go
@@ -179,6 +179,8 @@ type Options struct {
 // Parameter Store returns raw bytes; provide a decoder to decode the raw bytes
 // into the appropriate type for runtimevar.Snapshot.Value.
 // See the runtimevar package documentation for examples of decoders.
+//
+// Deprecated: AWS no longer supports their V1 API. Please migrate to OpenVariableV2.
 func OpenVariable(sess client.ConfigProvider, name string, decoder *runtimevar.Decoder, opts *Options) (*runtimevar.Variable, error) {
 	return runtimevar.New(newWatcher(false, sess, nil, name, decoder, opts)), nil
 }
diff --git a/runtimevar/awssecretsmanager/awssecretsmanager.go b/runtimevar/awssecretsmanager/awssecretsmanager.go
index fb9361695d..f2629a0cba 100644
--- a/runtimevar/awssecretsmanager/awssecretsmanager.go
+++ b/runtimevar/awssecretsmanager/awssecretsmanager.go
@@ -182,6 +182,8 @@ type Options struct {
 // Secrets Manager returns raw bytes; provide a decoder to decode the raw bytes
 // into the appropriate type for runtimevar.Snapshot.Value.
 // See the runtimevar package documentation for examples of decoders.
+//
+// Deprecated: AWS no longer supports their V1 API. Please migrate to OpenVariableV2.
 func OpenVariable(sess client.ConfigProvider, name string, decoder *runtimevar.Decoder, opts *Options) (*runtimevar.Variable, error) {
 	return runtimevar.New(newWatcher(false, sess, nil, name, decoder, opts)), nil
 }
diff --git a/secrets/awskms/kms.go b/secrets/awskms/kms.go
index 7cbbb899de..2986524f0e 100644
--- a/secrets/awskms/kms.go
+++ b/secrets/awskms/kms.go
@@ -208,6 +208,8 @@ func (o *URLOpener) OpenKeeperURL(ctx context.Context, u *url.URL) (*secrets.Kee
 // https://docs.aws.amazon.com/kms/latest/developerguide/viewing-keys.html#find-cmk-id-arn
 // for more details.
 // See the package documentation for an example.
+//
+// Deprecated: AWS no longer supports their V1 API. Please migrate to OpenKeeperV2.
 func OpenKeeper(client *kms.KMS, keyID string, opts *KeeperOptions) *secrets.Keeper {
 	if opts == nil {
 		opts = &KeeperOptions{}