diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index 9b7946d1e..377043a38 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -21,6 +21,6 @@ jobs:
         # Ensure no changes, but ignore node_modules dir since dev/fresh ci deps installed.
         run: |
           git diff --exit-code --stat -- . ':!node_modules' \
-          || (echo "##[error] found changed files after build. please 'npm run build && npm run format'" \
+          || (echo "##[error] found changed files after build. please 'npm run build && npm run fmt'" \
                   "and check in all changes" \
               && exit 1)
\ No newline at end of file
diff --git a/lib/github.js b/lib/github.js
index b63dd017c..bdd0350ab 100644
--- a/lib/github.js
+++ b/lib/github.js
@@ -30,6 +30,9 @@ class GitHubReleaser {
     createRelease(params) {
         return this.github.repos.createRelease(params);
     }
+    updateRelease(params) {
+        return this.github.repos.updateRelease(params);
+    }
     allReleases(params) {
         const updatedParams = Object.assign({ per_page: 100 }, params);
         return this.github.paginate.iterator(this.github.repos.listReleases.endpoint.merge(updatedParams));
@@ -88,11 +91,29 @@ exports.release = (config, releaser) => __awaiter(void 0, void 0, void 0, functi
                 finally { if (e_1) throw e_1.error; }
             }
         }
-        let release = yield releaser.getReleaseByTag({
+        let existingRelease = yield releaser.getReleaseByTag({
             owner,
             repo,
             tag
         });
+        const release_id = existingRelease.data.id;
+        const target_commitish = existingRelease.data.target_commitish;
+        const tag_name = tag;
+        const name = config.input_name || tag;
+        const body = `${existingRelease.data.body}\n${util_1.releaseBody(config)}`;
+        const draft = config.input_draft;
+        const prerelease = config.input_prerelease;
+        const release = yield releaser.updateRelease({
+            owner,
+            repo,
+            release_id,
+            tag_name,
+            target_commitish,
+            name,
+            body,
+            draft,
+            prerelease
+        });
         return release.data;
     }
     catch (error) {
diff --git a/src/github.ts b/src/github.ts
index c7d43d073..e76032c45 100644
--- a/src/github.ts
+++ b/src/github.ts
@@ -12,9 +12,12 @@ export interface ReleaseAsset {
 }
 
 export interface Release {
+  id: number;
   upload_url: string;
   html_url: string;
   tag_name: string;
+  body: string;
+  target_commitish: string;
 }
 
 export interface Releaser {
@@ -34,6 +37,18 @@ export interface Releaser {
     prerelease: boolean | undefined;
   }): Promise<{ data: Release }>;
 
+  updateRelease(params: {
+    owner: string;
+    repo: string;
+    release_id: number;
+    tag_name: string;
+    target_commitish: string;
+    name: string;
+    body: string | undefined;
+    draft: boolean | undefined;
+    prerelease: boolean | undefined;
+  }): Promise<{ data: Release }>;
+
   allReleases(params: {
     owner: string;
     repo: string;
@@ -66,6 +81,20 @@ export class GitHubReleaser implements Releaser {
     return this.github.repos.createRelease(params);
   }
 
+  updateRelease(params: {
+    owner: string;
+    repo: string;
+    release_id: number;
+    tag_name: string;
+    target_commitish: string;
+    name: string;
+    body: string | undefined;
+    draft: boolean | undefined;
+    prerelease: boolean | undefined;
+  }): Promise<{ data: Release }> {
+    return this.github.repos.updateRelease(params);
+  }
+
   allReleases(params: {
     owner: string;
     repo: string;
@@ -128,11 +157,31 @@ export const release = async (
         }
       }
     }
-    let release = await releaser.getReleaseByTag({
+    let existingRelease = await releaser.getReleaseByTag({
       owner,
       repo,
       tag
     });
+
+    const release_id = existingRelease.data.id;
+    const target_commitish = existingRelease.data.target_commitish;
+    const tag_name = tag;
+    const name = config.input_name || tag;
+    const body = `${existingRelease.data.body}\n${releaseBody(config)}`;
+    const draft = config.input_draft;
+    const prerelease = config.input_prerelease;
+
+    const release = await releaser.updateRelease({
+      owner,
+      repo,
+      release_id,
+      tag_name,
+      target_commitish,
+      name,
+      body,
+      draft,
+      prerelease
+    });
     return release.data;
   } catch (error) {
     if (error.status === 404) {
diff --git a/src/main.ts b/src/main.ts
index 8541a4c37..3985ea11b 100644
--- a/src/main.ts
+++ b/src/main.ts
@@ -31,9 +31,9 @@ async function run() {
     });
     let rel = await release(config, new GitHubReleaser(gh));
     if (config.input_files) {
-      const files = paths(config.input_files)
+      const files = paths(config.input_files);
       if (files.length == 0) {
-        console.warn(`🤔 ${config.input_files} not include valid file.`)
+        console.warn(`🤔 ${config.input_files} not include valid file.`);
       }
       files.forEach(async path => {
         await upload(gh, rel.upload_url, path);