diff --git a/restapi.go b/restapi.go
index b2d69598f..0b1789ac4 100644
--- a/restapi.go
+++ b/restapi.go
@@ -2711,11 +2711,22 @@ func (s *Session) ThreadMemberRemove(threadID, memberID string, options ...Reque
 	return err
 }
 
-// ThreadMember returns thread member object for the specified member of a thread
-func (s *Session) ThreadMember(threadID, memberID string, options ...RequestOption) (member *ThreadMember, err error) {
-	endpoint := EndpointThreadMember(threadID, memberID)
+// ThreadMember returns thread member object for the specified member of a thread.
+// withMember : Whether to include a guild member object.
+func (s *Session) ThreadMember(threadID, memberID string, withMember bool, options ...RequestOption) (member *ThreadMember, err error) {
+	uri := EndpointThreadMember(threadID, memberID)
+
+	queryParams := url.Values{}
+	if withMember {
+		queryParams.Set("with_member", "true")
+	}
+
+	if len(queryParams) > 0 {
+		uri += "?" + queryParams.Encode()
+	}
+
 	var body []byte
-	body, err = s.RequestWithBucketID("GET", endpoint, nil, endpoint, options...)
+	body, err = s.RequestWithBucketID("GET", uri, nil, uri, options...)
 
 	if err != nil {
 		return
@@ -2726,9 +2737,29 @@ func (s *Session) ThreadMember(threadID, memberID string, options ...RequestOpti
 }
 
 // ThreadMembers returns all members of specified thread.
-func (s *Session) ThreadMembers(threadID string, options ...RequestOption) (members []*ThreadMember, err error) {
+// limit      : Max number of thread members to return (1-100). Defaults to 100.
+// afterID    : Get thread members after this user ID.
+// withMember : Whether to include a guild member object for each thread member.
+func (s *Session) ThreadMembers(threadID string, limit int, withMember bool, afterID string, options ...RequestOption) (members []*ThreadMember, err error) {
+	uri := EndpointThreadMembers(threadID)
+
+	queryParams := url.Values{}
+	if withMember {
+		queryParams.Set("with_member", "true")
+	}
+	if limit > 0 {
+		queryParams.Set("limit", strconv.Itoa(limit))
+	}
+	if afterID != "" {
+		queryParams.Set("after", afterID)
+	}
+
+	if len(queryParams) > 0 {
+		uri += "?" + queryParams.Encode()
+	}
+
 	var body []byte
-	body, err = s.RequestWithBucketID("GET", EndpointThreadMembers(threadID), nil, EndpointThreadMembers(threadID), options...)
+	body, err = s.RequestWithBucketID("GET", uri, nil, uri, options...)
 
 	if err != nil {
 		return
diff --git a/structs.go b/structs.go
index c0a26d4d8..0cfffca3c 100644
--- a/structs.go
+++ b/structs.go
@@ -531,6 +531,10 @@ type ThreadMember struct {
 	JoinTimestamp time.Time `json:"join_timestamp"`
 	// Any user-thread settings, currently only used for notifications
 	Flags int `json:"flags"`
+	// Additional information about the user.
+	// NOTE: only present if the withMember parameter is set to true
+	// when calling Session.ThreadMembers or Session.ThreadMember.
+	Member *Member `json:"member,omitempty"`
 }
 
 // ThreadsList represents a list of threads alongisde with thread member objects for the current user.