diff --git a/src/libs/github/models/issue.py b/src/libs/github/models/issue.py
index 02f8200..e16f8e3 100644
--- a/src/libs/github/models/issue.py
+++ b/src/libs/github/models/issue.py
@@ -4,7 +4,7 @@
 @Author         : yanyongyu
 @Date           : 2021-03-11 16:57:04
 @LastEditors    : yanyongyu
-@LastEditTime   : 2021-05-16 22:47:53
+@LastEditTime   : 2021-05-21 01:02:36
 @Description    : None
 @GitHub         : https://github.com/yanyongyu
 """
@@ -22,8 +22,8 @@ from .label import Label
 from .comment import Comment
 from .timeline import (TimelineEvent, TimelineEventCommited,
                        TimelineEventCommented, TimelineEventReviewed,
-                       TimelineEventRenamed, TimelineEventMerged,
-                       TimelineEventClosed)
+                       TimelineEventReviewRequested, TimelineEventRenamed,
+                       TimelineEventMerged, TimelineEventClosed)
 
 
 class IssuePullRequest(_BaseModel):
@@ -92,9 +92,10 @@ class Issue(BaseModel):
         }
         return PaginatedList(Union[TimelineEventCommited,
                                    TimelineEventCommented,
-                                   TimelineEventReviewed, TimelineEventRenamed,
-                                   TimelineEventMerged, TimelineEventClosed,
-                                   TimelineEvent],
+                                   TimelineEventReviewed,
+                                   TimelineEventReviewRequested,
+                                   TimelineEventRenamed, TimelineEventMerged,
+                                   TimelineEventClosed, TimelineEvent],
                              self.requester,
                              "GET",
                              self.timeline_url,
diff --git a/src/libs/github/models/timeline.py b/src/libs/github/models/timeline.py
index aabc21b..231fe81 100644
--- a/src/libs/github/models/timeline.py
+++ b/src/libs/github/models/timeline.py
@@ -4,7 +4,7 @@
 @Author         : yanyongyu
 @Date           : 2021-05-14 00:57:33
 @LastEditors    : yanyongyu
-@LastEditTime   : 2021-05-17 18:53:05
+@LastEditTime   : 2021-05-21 02:24:18
 @Description    : None
 @GitHub         : https://github.com/yanyongyu
 """
@@ -106,6 +106,19 @@ class TimelineEventReviewed(TimelineEvent):
     links: TimelineEventReviewedLinks = Field(alias="_links")
 
 
+class TimelineEventReviewRequested(TimelineEvent):
+    event: Literal["review_requested"]
+    id: int
+    node_id: str
+    url: str
+    actor: User
+    commit_id: Optional[str]
+    commit_url: Optional[str]
+    created_at: datetime
+    review_requester: User
+    requested_reviewer: User
+
+
 class TimelineEventRenamedDetail(_BaseModel):
     to: str
     from_: str = Field(alias="from")
@@ -134,6 +147,23 @@ class TimelineEventMerged(TimelineEvent):
     created_at: datetime
 
 
+class TimelineEventLabeledInfo(_BaseModel):
+    name: str
+    color: str
+
+
+class TimelineEventLabeled(TimelineEvent):
+    event: Literal["labeled"]
+    id: int
+    node_id: str
+    url: str
+    actor: User
+    commit_id: Optional[str]
+    commit_url: Optional[str]
+    created_at: datetime
+    label: TimelineEventLabeledInfo
+
+
 class TimelineEventClosed(TimelineEvent):
     event: Literal["closed"]
     id: int
diff --git a/src/plugins/github/libs/issue/templates/comment.html b/src/plugins/github/libs/issue/templates/comment.html
index 2682cd6..a1ce497 100644
--- a/src/plugins/github/libs/issue/templates/comment.html
+++ b/src/plugins/github/libs/issue/templates/comment.html
@@ -2,7 +2,7 @@
  * @Author         : yanyongyu
  * @Date           : 2021-05-15 15:08:50
  * @LastEditors    : yanyongyu
- * @LastEditTime   : 2021-05-16 12:21:39
+ * @LastEditTime   : 2021-05-21 01:22:12
  * @Description    : None
  * @GitHub         : https://github.com/yanyongyu
 -->
@@ -76,7 +76,8 @@
               <td
                 class="d-block width-full p-3 overflow-visible f5 markdown-body"
               >
-                {{event.body_html|default(event.body_text)|default(event.body)}}
+                {{event.body_html or (event.body_text|escape) or
+                (event.body|escape) or ("<em>No description provided.</em>")}}
               </td>
             </tr>
           </tbody>
diff --git a/src/plugins/github/libs/issue/templates/issue.html b/src/plugins/github/libs/issue/templates/issue.html
index f93b19a..c81483e 100644
--- a/src/plugins/github/libs/issue/templates/issue.html
+++ b/src/plugins/github/libs/issue/templates/issue.html
@@ -37,6 +37,9 @@
               {% elif event|classname == "TimelineEventReviewed" -%}
               {% include "review.html" %}
 
+              {% elif event|classname == "TimelineEventReviewRequested" -%}
+              {% include "review_request.html" %}
+
               {% elif event|classname == "TimelineEventRenamed" -%}
               {% include "rename.html" %}
 
@@ -54,7 +57,7 @@
               {% include "close.html" %}
               {%- endif %}
               
-              {% else %}
+              {%- else -%}
               <!-- TODO: other events -->
               <!-- prettier-ignore -->
               {%- endif %}
diff --git a/src/plugins/github/libs/issue/templates/review_request.html b/src/plugins/github/libs/issue/templates/review_request.html
new file mode 100644
index 0000000..fcb4415
--- /dev/null
+++ b/src/plugins/github/libs/issue/templates/review_request.html
@@ -0,0 +1,52 @@
+<!--
+ * @Author         : yanyongyu
+ * @Date           : 2021-05-21 01:06:07
+ * @LastEditors    : yanyongyu
+ * @LastEditTime   : 2021-05-21 01:19:04
+ * @Description    : None
+ * @GitHub         : https://github.com/yanyongyu
+-->
+
+<div class="TimelineItem">
+  <div class="TimelineItem-badge">
+    <svg
+      class="octicon octicon-eye"
+      viewBox="0 0 16 16"
+      version="1.1"
+      width="16"
+      height="16"
+      aria-hidden="true"
+    >
+      <path
+        fill-rule="evenodd"
+        d="M1.679 7.932c.412-.621 1.242-1.75 2.366-2.717C5.175 4.242 6.527 3.5 8 3.5c1.473 0 2.824.742 3.955 1.715 1.124.967 1.954 2.096 2.366 2.717a.119.119 0 010 .136c-.412.621-1.242 1.75-2.366 2.717C10.825 11.758 9.473 12.5 8 12.5c-1.473 0-2.824-.742-3.955-1.715C2.92 9.818 2.09 8.69 1.679 8.068a.119.119 0 010-.136zM8 2c-1.981 0-3.67.992-4.933 2.078C1.797 5.169.88 6.423.43 7.1a1.619 1.619 0 000 1.798c.45.678 1.367 1.932 2.637 3.024C4.329 13.008 6.019 14 8 14c1.981 0 3.67-.992 4.933-2.078 1.27-1.091 2.187-2.345 2.637-3.023a1.619 1.619 0 000-1.798c-.45-.678-1.367-1.932-2.637-3.023C11.671 2.992 9.981 2 8 2zm0 8a2 2 0 100-4 2 2 0 000 4z"
+      ></path>
+    </svg>
+  </div>
+  <div class="TimelineItem-body">
+    {% set self_request = event.review_requester.login ==
+    event.requested_reviewer.login %}
+    <a class="d-inline-block">
+      <img
+        class="avatar avatar-user"
+        height="20"
+        width="20"
+        src="{{ event.review_requester.avatar_url }}"
+      />
+    </a>
+    <a class="author Link--primary text-bold">
+      {{ event.review_requester.login }}
+    </a>
+    <!-- prettier-ignore -->
+    {% if self_request -%}
+    self-requested a review
+    {%- else -%}
+    requested a review from
+    <a class="author Link--primary text-bold">
+      {{ event.requested_reviewer.login }}
+    </a>
+    <!-- prettier-ignore -->
+    {%- endif %}
+    {{event.created_at|relative_time}}
+  </div>
+</div>