diff --git a/.github/scripts/preview-comment.js b/.github/scripts/preview-comment.js
index 9d4262e..e367fd2 100644
--- a/.github/scripts/preview-comment.js
+++ b/.github/scripts/preview-comment.js
@@ -14,7 +14,7 @@ const generateUrls = ({ sha, owner, repo, commitUrl = null, prNumber = null }) =
   }
 }
 
-const generateCommentBody = ({ sha, owner, repo, commitUrl, prNumber }) => {
+const generateCommentBody = ({ sha, owner, repo, commitUrl, prNumber, version }) => {
   const { shortSha, shortUrl } = generateUrls({ sha, owner, repo, commitUrl, prNumber })
 
   return `${BOT_COMMENT_IDENTIFIER}
@@ -24,7 +24,14 @@ Try this version:
 bun add -g ${shortUrl}
 \`\`\`
 
-###### _[${shortSha}](${commitUrl})_`
+###### _[v${version} — ${shortSha}](${commitUrl})_`
+}
+
+const getNextVersion = (existingComment) => {
+  if (!existingComment?.body) return 1
+  const match = existingComment.body.match(/v(\d+) —/)
+  const currentVersion = Number.parseInt(match[1], 10)
+  return currentVersion + 1
 }
 
 const findBotComment = async ({ github, context, issueNumber }) => {
@@ -96,7 +103,10 @@ const handlePush = async ({ logger, github, context, body, output, commitUrl })
 
 export async function run(github, context, core) {
   const output = JSON.parse(readFileSync("output.json", "utf8"))
-  const sha = context.eventName === "pull_request" ? context.payload.pull_request.head.sha : context.payload.after
+  const sha =
+    context.eventName === "pull_request"
+      ? context.payload.pull_request.head.sha
+      : context.payload.after
   const prNumber = context.eventName === "pull_request" ? context.payload.pull_request.number : null
 
   const { commitUrl } = generateUrls({
@@ -106,12 +116,19 @@ export async function run(github, context, core) {
     prNumber,
   })
 
+  const existingComment = await findBotComment({
+    github,
+    context,
+    issueNumber: prNumber || context.issue.number,
+  })
+
   const body = generateCommentBody({
     sha,
     owner: context.repo.owner,
     repo: context.repo.repo,
     commitUrl,
     prNumber,
+    version: getNextVersion(existingComment),
   })
 
   const handlers = {
diff --git a/.github/workflows/test.yml b/.github/workflows/test.yml
new file mode 100644
index 0000000..08af527
--- /dev/null
+++ b/.github/workflows/test.yml
@@ -0,0 +1,19 @@
+name: Test
+on:
+  pull_request:
+  push:
+    branches: ["main"]
+jobs:
+  test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Setup Bun
+        uses: oven-sh/setup-bun@v2
+        with:
+          bun-version: latest
+      - name: Install dependencies
+        run: bun install
+      - name: Run tests
+        run: bun test