diff --git a/members.go b/members.go
index 51b9fc5..5c0161b 100644
--- a/members.go
+++ b/members.go
@@ -35,7 +35,7 @@ type MemberRequest struct {
 	Location        *MemberLocation        `json:"location,omitempty"`
 	IPOpt           string                 `json:"ip_opt,omitempty"`
 	IPSignup        string                 `json:"ip_signup,omitempty"`
-  Tags            []string               `json:"tags,omitempty"`
+  	Tags            []MemberTag            `json:"tags,omitempty"`
 	TimestampSignup string                 `json:"timestamp_signup,omitempty"`
 	TimestampOpt    string                 `json:"timestamp_opt,omitempty"`
 }
diff --git a/segments.go b/segments.go
index 60b2ae4..c8ba30d 100644
--- a/segments.go
+++ b/segments.go
@@ -23,7 +23,7 @@ type SegmentRequest struct {
 type Segment struct {
 	SegmentRequest
 
-	ID          string    `json:"id"`
+	ID          int    `json:"id"`
 	MemberCount int    `json:"member_count"`
 	Type        string `json:"type"`
 	CreatedAt   string `json:"created_at"`