diff --git a/github/payload.go b/github/payload.go
index 5971552..4ede9c3 100644
--- a/github/payload.go
+++ b/github/payload.go
@@ -2757,19 +2757,20 @@ type PullRequestPayload struct {
 			Type              string `json:"type"`
 			SiteAdmin         bool   `json:"site_admin"`
 		} `json:"user"`
-		Body               string     `json:"body"`
-		CreatedAt          time.Time  `json:"created_at"`
-		UpdatedAt          time.Time  `json:"updated_at"`
-		ClosedAt           *time.Time `json:"closed_at"`
-		MergedAt           *time.Time `json:"merged_at"`
-		MergeCommitSha     *string    `json:"merge_commit_sha"`
-		Assignee           *Assignee  `json:"assignee"`
-		Milestone          *Milestone `json:"milestone"`
-		CommitsURL         string     `json:"commits_url"`
-		ReviewCommentsURL  string     `json:"review_comments_url"`
-		ReviewCommentURL   string     `json:"review_comment_url"`
-		CommentsURL        string     `json:"comments_url"`
-		StatusesURL        string     `json:"statuses_url"`
+		Body               string      `json:"body"`
+		CreatedAt          time.Time   `json:"created_at"`
+		UpdatedAt          time.Time   `json:"updated_at"`
+		ClosedAt           *time.Time  `json:"closed_at"`
+		MergedAt           *time.Time  `json:"merged_at"`
+		MergeCommitSha     *string     `json:"merge_commit_sha"`
+		Assignee           *Assignee   `json:"assignee"`
+		Assignees          []*Assignee `json:"assignees"`
+		Milestone          *Milestone  `json:"milestone"`
+		CommitsURL         string      `json:"commits_url"`
+		ReviewCommentsURL  string      `json:"review_comments_url"`
+		ReviewCommentURL   string      `json:"review_comment_url"`
+		CommentsURL        string      `json:"comments_url"`
+		StatusesURL        string      `json:"statuses_url"`
 		RequestedReviewers []struct {
 			Login             string `json:"login"`
 			ID                int    `json:"id"`
@@ -3694,19 +3695,20 @@ type PullRequestReviewCommentPayload struct {
 			Type              string `json:"type"`
 			SiteAdmin         bool   `json:"site_admin"`
 		} `json:"user"`
-		Body              string     `json:"body"`
-		CreatedAt         time.Time  `json:"created_at"`
-		UpdatedAt         time.Time  `json:"updated_at"`
-		ClosedAt          *time.Time `json:"closed_at"`
-		MergedAt          *time.Time `json:"merged_at"`
-		MergeCommitSha    string     `json:"merge_commit_sha"`
-		Assignee          *Assignee  `json:"assignee"`
-		Milestone         *Milestone `json:"milestone"`
-		CommitsURL        string     `json:"commits_url"`
-		ReviewCommentsURL string     `json:"review_comments_url"`
-		ReviewCommentURL  string     `json:"review_comment_url"`
-		CommentsURL       string     `json:"comments_url"`
-		StatusesURL       string     `json:"statuses_url"`
+		Body              string      `json:"body"`
+		CreatedAt         time.Time   `json:"created_at"`
+		UpdatedAt         time.Time   `json:"updated_at"`
+		ClosedAt          *time.Time  `json:"closed_at"`
+		MergedAt          *time.Time  `json:"merged_at"`
+		MergeCommitSha    string      `json:"merge_commit_sha"`
+		Assignee          *Assignee   `json:"assignee"`
+		Assignees         []*Assignee `json:"assignees"`
+		Milestone         *Milestone  `json:"milestone"`
+		CommitsURL        string      `json:"commits_url"`
+		ReviewCommentsURL string      `json:"review_comments_url"`
+		ReviewCommentURL  string      `json:"review_comment_url"`
+		CommentsURL       string      `json:"comments_url"`
+		StatusesURL       string      `json:"statuses_url"`
 		Head              struct {
 			Label string `json:"label"`
 			Ref   string `json:"ref"`