diff --git a/github/issues_timeline.go b/github/issues_timeline.go
index ffd9b6fecfc..903f5b89c34 100644
--- a/github/issues_timeline.go
+++ b/github/issues_timeline.go
@@ -97,6 +97,14 @@ type Timeline struct {
 	//     reviewed
 	//       The pull request was reviewed.
 	//
+	//     review_requested
+	//       The actor requested a review from a user or team.
+	//       Reviewer and Requester/RequestedTeam will be populated.
+	//
+	//     review_request_removed
+	//       The actor removed a review request from a user or team.
+	//       Reviewer and Requester/RequestedTeam will be populated.
+	//
 	//     subscribed
 	//       The actor subscribed to receive notifications for an issue.
 	//
diff --git a/github/issues_timeline_test.go b/github/issues_timeline_test.go
index 1e88f500d99..ed7649489e2 100644
--- a/github/issues_timeline_test.go
+++ b/github/issues_timeline_test.go
@@ -255,3 +255,91 @@ func TestTimeline_Marshal(t *testing.T) {
 
 	testJSONMarshal(t, u, want)
 }
+
+func TestTimeline_ReviewRequests(t *testing.T) {
+	t.Parallel()
+	client, mux, _ := setup(t)
+
+	mux.HandleFunc("/repos/example-org/example-repo/issues/3/timeline", func(w http.ResponseWriter, r *http.Request) {
+		testMethod(t, r, "GET")
+		fmt.Fprint(w, `[{
+		    "id": 1234567890,
+		    "url": "http://example.com/timeline/1",
+		    "actor": {
+			"login": "actor-user",
+			"id": 1
+		    },
+		    "event": "review_requested",
+		    "created_at": "2006-01-02T15:04:05Z",
+		    "requested_reviewer": {
+			"login": "reviewer-user",
+			"id": 2
+		    },
+		    "review_requester": {
+			"login": "requester-user",
+			"id": 1
+		    }
+		},
+		{
+		    "id": 1234567891,
+		    "url": "http://example.com/timeline/2",
+		    "actor": {
+			"login": "actor-user",
+			"id": 1
+		    },
+		    "event": "review_request_removed",
+		    "created_at": "2006-01-02T15:04:05Z",
+		    "requested_reviewer": {
+			"login": "reviewer-user",
+			"id": 2
+		    }
+		}]`)
+	})
+
+	ctx := context.Background()
+	events, _, err := client.Issues.ListIssueTimeline(ctx, "example-org", "example-repo", 3, nil)
+	if err != nil {
+		t.Errorf("Issues.ListIssueTimeline returned error: %v", err)
+	}
+
+	want := []*Timeline{
+		{
+			ID:  Ptr(int64(1234567890)),
+			URL: Ptr("http://example.com/timeline/1"),
+			Actor: &User{
+				Login: Ptr("actor-user"),
+				ID:    Ptr(int64(1)),
+			},
+			Event:     Ptr("review_requested"),
+			CreatedAt: &Timestamp{referenceTime},
+			Reviewer: &User{
+				Login: Ptr("reviewer-user"),
+				ID:    Ptr(int64(2)),
+			},
+			Requester: &User{
+				Login: Ptr("requester-user"),
+				ID:    Ptr(int64(1)),
+			},
+		},
+		{
+			ID:  Ptr(int64(1234567891)),
+			URL: Ptr("http://example.com/timeline/2"),
+			Actor: &User{
+				Login: Ptr("actor-user"),
+				ID:    Ptr(int64(1)),
+			},
+			Event:     Ptr("review_request_removed"),
+			CreatedAt: &Timestamp{referenceTime},
+			Reviewer: &User{
+				Login: Ptr("reviewer-user"),
+				ID:    Ptr(int64(2)),
+			},
+		},
+	}
+
+	if !cmp.Equal(events, want) {
+		t.Errorf("Issues.ListIssueTimeline review request events = %+v, want %+v", events, want)
+		diff := cmp.Diff(events, want)
+		t.Errorf("Difference: %s", diff)
+	}
+}