diff --git a/.github/workflows/samples.yml b/.github/workflows/samples.yml
index 9d0a0f2ba..df6d4059d 100644
--- a/.github/workflows/samples.yml
+++ b/.github/workflows/samples.yml
@@ -14,6 +14,7 @@ jobs:
         node-version: [18.x, 20.x, 22.x]
         sample:
           - slack-samples/bolt-ts-starter-template
+          - slack-samples/bolt-ts-custom-function-template
 
     steps:
       - name: Use Node.js ${{ matrix.node-version }}
diff --git a/package.json b/package.json
index fb82cbecd..cf899f543 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@slack/bolt",
-  "version": "3.20.0-customFunctionBeta.1",
+  "version": "3.21.0",
   "description": "A framework for building Slack apps, fast.",
   "author": "Slack Technologies, LLC",
   "license": "MIT",