diff --git a/CHANGELOG.md b/CHANGELOG.md
index e94e3b73..90e7e9f0 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -6,6 +6,12 @@
 ⚡️ Code style
 -->
 
+## v2.4.3
+
+`2021.09.13`
+
+- 🚀 feat: default number support `issue-comment`. [#90](https://github.com/actions-cool/issues-helper/pull/90)
+
 ## v2.4.2
 
 `2021.09.06`
diff --git a/dist/index.js b/dist/index.js
index 24b54d2a..d6aae156 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -11621,7 +11621,9 @@ async function main() {
     }
 
     let defaultNo;
-    if (ctx.eventName === 'issues') defaultNo = ctx.payload.issue.number;
+    if (ctx.eventName === 'issues' || ctx.eventName === 'issue_comment') {
+      defaultNo = ctx.payload.issue.number;
+    }
 
     const issueNumber = core.getInput('issue-number') || defaultNo;
     const commentId = core.getInput('comment-id');
diff --git a/package.json b/package.json
index d8c66947..e31d201d 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "issues-helper",
-  "version": "2.4.2",
+  "version": "2.4.3",
   "private": true,
   "description": "A GitHub Action easily helps you automatically manage issues.",
   "main": "src/main.js",
diff --git a/src/main.js b/src/main.js
index b5e1b039..3f54a641 100644
--- a/src/main.js
+++ b/src/main.js
@@ -77,7 +77,9 @@ async function main() {
     }
 
     let defaultNo;
-    if (ctx.eventName === 'issues') defaultNo = ctx.payload.issue.number;
+    if (ctx.eventName === 'issues' || ctx.eventName === 'issue_comment') {
+      defaultNo = ctx.payload.issue.number;
+    }
 
     const issueNumber = core.getInput('issue-number') || defaultNo;
     const commentId = core.getInput('comment-id');