diff --git a/README.md b/README.md
index 9b6bbbec3..1aa85a188 100644
--- a/README.md
+++ b/README.md
@@ -2,7 +2,8 @@
 
 The MinIO Go Client SDK provides simple APIs to access any Amazon S3 compatible object storage.
 
-This quickstart guide will show you how to install the MinIO client SDK, connect to MinIO, and provide a walkthrough for a simple file uploader. For a complete list of APIs and examples, please take a look at the [Go Client API Reference](https://min.io/docs/minio/linux/developers/go/API.html).
+This quickstart guide will show you how to install the MinIO client SDK, connect to MinIO, and provide a walkthrough for a simple file uploader.
+For a complete list of APIs and examples, please take a look at the [godoc documentation](https://pkg.go.dev/github.com/minio/minio-go/v7) or [Go Client API Reference](https://min.io/docs/minio/linux/developers/go/API.html).
 
 This document assumes that you have a working [Go development environment](https://golang.org/doc/install).
 
@@ -236,6 +237,7 @@ The full API Reference is available here.
 * [presignedpostpolicy.go](https://github.com/minio/minio-go/blob/master/examples/s3/presignedpostpolicy.go)
 
 ## Explore Further
+* [Godoc Documentation](https://pkg.go.dev/github.com/minio/minio-go/v7)
 * [Complete Documentation](https://min.io/docs/minio/kubernetes/upstream/index.html)
 * [MinIO Go Client SDK API Reference](https://min.io/docs/minio/linux/developers/go/API.html)
 
diff --git a/pkg/credentials/assume_role.go b/pkg/credentials/assume_role.go
index 1c73d1008..800c4a294 100644
--- a/pkg/credentials/assume_role.go
+++ b/pkg/credentials/assume_role.go
@@ -93,7 +93,8 @@ type STSAssumeRoleOptions struct {
 	AccessKey string
 	SecretKey string
 
-	Policy string // Optional to assign a policy to the assumed role
+	SessionToken string // Optional if the first request is made with temporary credentials.
+	Policy       string // Optional to assign a policy to the assumed role
 
 	Location        string // Optional commonly needed with AWS STS.
 	DurationSeconds int    // Optional defaults to 1 hour.
@@ -101,6 +102,7 @@ type STSAssumeRoleOptions struct {
 	// Optional only valid if using with AWS STS
 	RoleARN         string
 	RoleSessionName string
+	ExternalID      string
 }
 
 // NewSTSAssumeRole returns a pointer to a new
@@ -161,6 +163,9 @@ func getAssumeRoleCredentials(clnt *http.Client, endpoint string, opts STSAssume
 	if opts.Policy != "" {
 		v.Set("Policy", opts.Policy)
 	}
+	if opts.ExternalID != "" {
+		v.Set("ExternalId", opts.ExternalID)
+	}
 
 	u, err := url.Parse(endpoint)
 	if err != nil {
@@ -181,6 +186,9 @@ func getAssumeRoleCredentials(clnt *http.Client, endpoint string, opts STSAssume
 	}
 	req.Header.Set("Content-Type", "application/x-www-form-urlencoded")
 	req.Header.Set("X-Amz-Content-Sha256", hex.EncodeToString(hash.Sum(nil)))
+	if opts.SessionToken != "" {
+		req.Header.Set("X-Amz-Security-Token", opts.SessionToken)
+	}
 	req = signer.SignV4STS(*req, opts.AccessKey, opts.SecretKey, opts.Location)
 
 	resp, err := clnt.Do(req)