diff --git a/functions/billing/index.js b/functions/billing/index.js
index 38d3bdfe5a..c99b222e25 100644
--- a/functions/billing/index.js
+++ b/functions/billing/index.js
@@ -23,13 +23,15 @@ const PROJECT_NAME = `projects/${PROJECT_ID}`;
 // [END functions_billing_limit]
 
 // [START functions_billing_slack]
-const slack = require('slack');
+const {WebClient} = require('@slack/web-api');
 
 // TODO(developer) replace these with your own values
 const BOT_ACCESS_TOKEN =
   process.env.BOT_ACCESS_TOKEN || 'xxxx-111111111111-abcdefghidklmnopq';
 const CHANNEL = process.env.SLACK_CHANNEL || 'general';
 
+const slackClient = new WebClient(BOT_ACCESS_TOKEN);
+
 exports.notifySlack = async pubsubEvent => {
   const pubsubAttrs = pubsubEvent.attributes;
   const pubsubData = Buffer.from(pubsubEvent.data, 'base64').toString();
@@ -37,13 +39,16 @@ exports.notifySlack = async pubsubEvent => {
     pubsubAttrs
   )}, ${pubsubData}`;
 
-  await slack.chat.postMessage({
-    token: BOT_ACCESS_TOKEN,
-    channel: CHANNEL,
-    text: budgetNotificationText,
-  });
-
-  return 'Slack notification sent successfully';
+  try {
+    await slackClient.chat.postMessage({
+      channel: CHANNEL,
+      text: budgetNotificationText,
+    });
+    return 'Slack notification sent successfully';
+  } catch (error) {
+    console.error('Error sending Slack message:', error);
+    throw error;
+  }
 };
 // [END functions_billing_slack]
 
diff --git a/functions/billing/package.json b/functions/billing/package.json
index 0c59d6c3e9..7417efc7bc 100644
--- a/functions/billing/package.json
+++ b/functions/billing/package.json
@@ -16,9 +16,9 @@
   "dependencies": {
     "@google-cloud/billing": "^4.0.0",
     "@google-cloud/compute": "^4.0.0",
+    "@slack/web-api": "^7.9.1",
     "google-auth-library": "^9.0.0",
-    "googleapis": "^143.0.0",
-    "slack": "^11.0.1"
+    "googleapis": "^143.0.0"
   },
   "devDependencies": {
     "@google-cloud/functions-framework": "^3.0.0",